Club Factory — Defective airpods /return rejected

Received an defective airpods from club factory .applied return within 2days .return parcel by the way of pickup service .But refund rejected because of seller mentioned wrong product received .No proper response by seller. If I received a wrong product then i mentioned it as wrong product .but I received a defective one so I mentioned defective product in return process and also the pickup boy received my parcel after check with invoice bill.so how can I response for the wrong product received by seller