Amazon first, bank last — because filing with the bank first can close the Amazon door for good. Pick your situation and where you are in the process: you get Amazon's own ladder (seller, 48 hours, A-to-z claim), the 90-day window, the exclusions, and the exact point where escalating to your bank is the right move.
Amazon's A-to-z Guarantee covers purchases from third-party sellers on Amazon: the timely delivery and condition of the item, plus two less-known covers — reimbursement if a seller does not give you an agreed refund, and reimbursement if a seller charged more than you authorized. The order is fixed: message the seller through your Amazon account, wait 48 hours, then file the A-to-z claim inside its window of up to 90 days after the maximum estimated delivery date (for a missing item, Amazon's help wording asks you to wait past that date — 3 business days past it). Only then, if Amazon denies the claim or your card deadline is about to expire, does the bank chargeback step in — under the underlying problem (never arrived: Visa 13.1; not as described: Visa 13.3), never under "Amazon said no." The full reasoning, the exclusions table, and the evidence checklist are in the companion guide: Amazon A-to-z vs chargeback: which first, and what filing with the bank first costs you.
The Marketplace Dispute Navigator covers Temu, Shein, AliExpress, Etsy, Depop and Vinted — Amazon is not in it, because Amazon's system does not fit that navigator's shape: the seller-first rule, the 90-day window off the estimated delivery date, the agreed-refund cover, and the bank-chargeback exclusion all need their own tool. This picker is that tool. Note the deliberate separation: Amazon Pay purchases on third-party sites (not on amazon.com) run a different clock — wait 15 days from the order date, then 75 days to file — and none of those numbers applies to amazon.com orders.