Flipkart — Refund Cancel Many Time

Dear Sir,
I Have Purchase
sadgatih Back Cover for HONOR NOVA 3I (Soft & Flexible Back case), Black Order And received order[protected], next day[protected] return request then same day i delivery message your item mismatch so reject return with out any courier person pickup. so i complain flipcart customer care no of time 6 time but five time rejected my request, so i last complain customer executive says we have not refund your payment without pickup, but note his courier coming my address, with out pickup courier partner send message your item miss match. its fraud for flipcart and his courier partner and also his supplier
so i request you please any prefect result