Amazon India — ielts books

Address:

Chennai, Tamil Nadu, 600102

I had ordered two ielts books from b2a uk on 28th may 2018. The books got delivered on 7th june 2018 but there were no cd which are very much essential without which the books are almost useless. So i placed a return request the same day and self shipped it to the address on 13.06.2018. As per the tracking number the product got returned on 18.06.18. But the seller is saying that they have not received the product and asking all sorts of irrelevant questions in order to stretch it beyond the due date so that he does not have to return the money.