Amazon India — Refund for a returned item

Address:	Durg, Chhattisgarh, 490006
Website:	Amazon.in

I placed the order for apple macbook gold 512gb from amazon on 17 feb with order id[protected] and it was delivered to me on 26 feb by gati courier with tracking number[protected] but the problem was that instead of gold color it was a silver one so i requested a return for it the product was picked up on 27 feb by amazon representative and the representative gave me a return slip which i have attached to my complaint.
It has been about 14-15 days the return package with tracking number[protected] has been returned by me but till date no update has been given to me and package is not yet received by amazon and no refund has been issued please help me to get my money back as it a huge amount for me.
Thanks