Cardholders often use one word for two separate processes. A transaction you never authorised and a purchase that disappointed you follow different rules, and the distinction determines what protection applies.
Unauthorised use is a fraud matter
If a transaction was not authorised by the cardholder, the question is whether the card details were used without permission, not whether the goods were satisfactory.
Liability rules in most jurisdictions limit what a cardholder can be charged for unauthorised use, provided the loss is reported promptly and the cardholder was not negligent.
The issuer investigates, and the loss ultimately falls on the issuer, the merchant or the merchant's payment provider depending on how the transaction was authenticated.
A dispute concerns a transaction you did make
Where the cardholder authorised the payment but the goods never arrived, arrived damaged or were not as described, the claim is about performance rather than authorisation.
These claims run through the chargeback process, which is a set of network rules allowing a payment to be reversed against the merchant under defined conditions.
Because the process is contractual rather than statutory, the grounds, evidence and deadlines are set by the card network and vary by claim type.
The merchant gets to respond
A chargeback is not a refund decision made by the issuer alone. The merchant is notified and may present evidence that the goods were delivered or the description accurate.
If that evidence is accepted, the reversal can be undone, and the cardholder may be told the claim failed after initially seeing the money returned.
This is why documentation matters, since the outcome usually turns on delivery records, correspondence and what the listing actually said.
Deadlines are shorter than people expect
Chargeback rights run from the transaction date or the expected delivery date, and the window is measured in months rather than years.
Waiting for a merchant to resolve a complaint can consume that window entirely, after which the route is closed regardless of the merits.
Raising the claim while continuing to pursue the merchant directly preserves the option, and issuers generally accept that both can run at once.
Some jurisdictions add statutory protection
Certain consumer credit laws make the card issuer jointly responsible with the merchant for goods bought on credit within defined value limits.
That protection is stronger than a chargeback because it is a legal claim rather than a network rule, and it is not bound by the same deadlines.
Whether it exists, what it covers and which payment types qualify vary by jurisdiction and change over time, so the applicable route is worth confirming before choosing one.