Club Factory — My return product was not delivered to the seller.

I ordered and returned ever diva jean combo in the club factory. I received on 16 june 2020 and returned on 17 june 2020. Tracking id is [protected] and order id is son[protected]_1. The delhivery partner did not deliver that item to the seller. So that seller rejected my return. I tracked the product status in delhivery website, from four days the status was not changing and expected delivery date is showing as invalid date. Please help me. I need my refund.