A financial advisory client received a $25,000 chargeback on a six-month engagement. The processor’s dispute team flagged it as unwinnable reason code 4853 against a service deliverable is statistically the hardest category to defend.
DisputeProof’s workspace mapped the case to Mastercard’s compelling-evidence requirements for cancelled merchandise: signed engagement letter, dated deliverables, communication thread proving the work was performed, and the customer’s own acknowledgment of receipt. The pre-submission audit caught two missing documents before the packet went out.
Decision reversed in the merchant’s favor. The processor reissued the funds on day 39. The merchant walked away with the full $25,000 and a process they could repeat on every future case.