An air9.co charge on your credit or debit card statement almost always comes from a digital subscription you started as a free or low-cost trial, most often with PDFfiller or a similar online document tool. Air9.co isn’t a product. It’s the billing descriptor the merchant’s payment processor puts on your statement, which is why the name looks unfamiliar even when the underlying service isn’t. The charge is rarely outright fraud, but that doesn’t mean you agreed to keep paying. How you get it removed depends on whether you go through the merchant, your bank, or both, and the deadlines are tighter than most people expect.
What air9.co Actually Is
Air9.co is a billing support portal that handles payment processing for various online software companies. The service most commonly reported behind the descriptor is PDFfiller, an online PDF editing and e-signature platform. Other digital tools, including file converters and cloud productivity apps, route billing through the same system. The entry on your statement often appears as “AIR9.CO” followed by a phone number and a city, which adds to the confusion.
You don’t recognize the name because the company you signed up with outsources payment handling. The transaction you authorized on the software’s own site shows up weeks later under the processor’s name instead of the brand’s. Common in online commerce, confusing on a statement.
Why the Charge Showed Up
Most air9.co charges trace back to a negative option billing model. You start a free or low-cost trial, and if you don’t cancel before it ends, the merchant automatically begins charging the full subscription price. The federal Restore Online Shoppers’ Confidence Act requires any seller using this model online to clearly disclose all material terms before collecting your billing information, get your express informed consent before charging you, and provide a simple way to stop recurring charges.1Office of the Law Revision Counsel. 15 USC 8403 – Negative Option Marketing on the Internet
In practice, those disclosures often fall short. An FTC enforcement action found that burying terms in fine print or in separate terms-and-conditions documents does not satisfy the “clear and conspicuous” standard, even if the font size is technically readable.2Federal Trade Commission. District Court Rules on Redress, ROSCA, and Disclosures If you genuinely had no idea a trial would convert to a paid subscription, the merchant may not have met its legal obligations, which strengthens your position in a dispute.
One boundary to keep in mind: the FTC’s 2024 “Click to Cancel” rule, which would have required merchants to let you cancel as easily as you signed up, was vacated by the Eighth Circuit in July 2025 on procedural grounds, and the agency is restarting the rulemaking. No federal click-to-cancel requirement is currently in effect. ROSCA’s existing requirement that merchants provide “simple mechanisms” for cancellation still applies.3Federal Trade Commission. Restore Online Shoppers’ Confidence Act
Cancel Through air9.co First
The fastest way to stop future charges is to cancel through the air9.co portal itself. Before you start, pull up the statement and note the exact transaction date, the precise dollar amount, and the last four digits of the card charged. Some statements also list a transaction ID, which speeds things up.
Go to air9.co and look for a “cancel subscription” or “support” link. Enter your billing details into the web form so the system can locate your account. After you submit the cancellation request, check your email immediately for a confirmation and save it along with any ticket number. That confirmation is your proof you tried to cancel, and it matters if the charges continue and you escalate to your bank.
If the portal can’t find your account or the site doesn’t respond, try the phone number listed next to the air9.co descriptor on your statement. Document the date, time, and outcome of every contact attempt. A merchant that makes cancellation unreasonably difficult may be violating ROSCA’s simple-mechanism requirement.1Office of the Law Revision Counsel. 15 USC 8403 – Negative Option Marketing on the Internet
Disputing a Credit Card Charge
If the merchant won’t cancel or refund you, the Fair Credit Billing Act gives credit card holders a formal dispute process. Here’s where most people trip: the law protects consumers who send written notice to the card issuer’s billing inquiries address, separate from any payment. Calling customer service or submitting an online form may start the process at some banks, but the statute specifically protects the written route.4Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
Your written notice must include your name and account number, a statement that you believe the bill contains an error along with the dollar amount, and the reason you believe it’s wrong. Send it to the address the issuer designates for billing disputes, not the general correspondence address.4Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
The deadline is strict. Your notice must reach the issuer within 60 days after the first statement containing the disputed charge was sent to you. Miss that window and you lose most of your legal leverage. It’s the single most important date in the whole process, and the one most people learn about too late.4Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
Once the issuer receives your notice, it must acknowledge it within 30 days and resolve the dispute within two complete billing cycles, but no more than 90 days. During the investigation, the issuer cannot try to collect the disputed amount or report it as delinquent. If the investigation confirms the error, the issuer must correct your account and refund any related finance charges.4Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors You still have to pay any undisputed portion of the bill while the investigation runs.5Federal Trade Commission. Fair Credit Billing
Disputing a Debit Card Charge
If you paid with a debit card, the rules are different and less forgiving. Debit transactions are governed by the Electronic Fund Transfer Act, and your liability grows the longer you wait.
- Reported within 2 business days: maximum liability of $50.
- Reported after 2 business days but within 60 days of your statement: liability can reach up to $500.
- Reported after 60 days: you could be liable for the full amount of unauthorized transfers that occur after the 60-day period, with no cap.
Those tiers are set by federal statute, and the burden falls on you to report promptly.6Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability Under the implementing regulation, if the bank can’t resolve the dispute within 10 business days, it generally must issue a provisional credit while the investigation continues.7Consumer Financial Protection Bureau. Regulation E 1005.6 – Liability of Consumer for Unauthorized Transfers
The practical difference matters. With a credit card, the disputed money was never taken out of your bank balance. With a debit card, it’s already gone, and the provisional credit may take over a week to appear. In the meantime, the missing funds can trigger overdraft fees or cause other payments to bounce. If you regularly sign up for online trials, a credit card gives you a significantly stronger safety net.
Blocking Future Charges
Even after you cancel with the merchant, charges sometimes continue. A merchant may process one final billing cycle after cancellation, or the cancellation may not propagate through its system. Two additional steps shut the door completely.
First, contact your bank or credit union and request a stop payment order on the specific merchant. This tells your financial institution not to process future payments from that company.8Consumer Financial Protection Bureau. How Do I Stop Automatic Payments From My Bank Account Some banks charge a fee, typically $15 to $35, though many waive it for online requests or don’t charge at all. Ask before you authorize.
Second, consider requesting a new card number from your issuer. This is the most reliable way to ensure no further charges go through, because the old number simply stops working. The downside is that you’ll need to update payment information with every other legitimate service that bills to that card. For most people with a stubborn recurring charge, the inconvenience is worth the certainty.
What Happens If You Ignore It
Ignoring an unwanted recurring charge doesn’t make it go away. If the subscription stays active and you stop paying the card it bills to, the merchant may eventually send the unpaid balance to a third-party collection agency. Creditors typically start that process after roughly 180 days of nonpayment. Once a collection account appears on your credit report, it stays there for seven years from the date of the original missed payment, even if you later pay it off.
The credit score impact depends on the scoring model. Newer FICO versions disregard paid collections and collections with an original balance under $100, but older models that many lenders still use will count them against you. Safer to cancel, dispute, or block the charge than let statements pile up.
Documentation to Gather Before You Start
Whether you’re dealing with the merchant or your bank, the quality of your records drives the outcome. Pull these together before initiating any dispute:
- Bank statements, with every air9.co charge highlighted, including the date, amount, and any transaction ID or reference number.
- The cancellation confirmation email or ticket number from your air9.co request. Screenshot it immediately in case the email disappears.
- A contact log with dates, times, and summaries of every phone call or chat with the merchant’s support team.
- The original signup confirmation email, if you can find it. It may show what was disclosed to you and what wasn’t.
If the merchant’s checkout page didn’t clearly disclose the subscription price, the trial duration, or how to cancel, that’s directly relevant both to your bank dispute and to any potential ROSCA violation. Screenshots of the current signup flow can help, though the page may have changed since you signed up.