Amazon India — return of the product not done even after two months of the delivery of the product

I have ordered a knee massager from amazon on aug 24. It got delivered on aug 28. I requested for return on aug 29. Before ordering the product itself i had enquired whether that product would be returnable or not and i was affirmed that it is returnable. That is why i made the order. But that product is not yet picked up and i am stuck with a useless massager and i am out of 25000. Until sept 18 i called amazon customer care numerous time to pick up the product but to no avail. I was told that my money would get refunded even if the pick up is not done. But it didn't happen. From sept 18 - oct 11 i was out of station. But after that i again called to pick up the product to which they replied that i will have to courier the product and i was given a couple of links of courier services but none of them worked. Some of them were non functional in my city and some sites were themselves not working.

I just want my 25000 back.