Amazon India — Amazon hold my account and doesn't refund me

Amazon hold my account anf doesn't refund me,... Iam making a order, peter england pants,. But seller give. Me a diesel brand pants, i am happy for iam received such a big brand, such less amount as [protected]@999inr. But their size is too short so iam making return of this item... But the courier partner is doesn't attempt for pickup my product so iam, contact to customer care of amazon and iam share all the issues, and he say me to make self return and i gave the indian post courier receipt, now the product is received by selling and he doesn't create any refund and amazon hold my account, their for iam not contract amazon customer care for refund related of this product, i am lost my amount @999inr