Amazon India — refund not received from 55 days for the returned product

Address:	Bangalore, Karnataka
Website:	www.amazon.in

I have returned my product on 13th oct 18 and received a message stating that the refund has been initiated on 15th oct and will be credited into my account within 23rd oct but the same has not been credited till date. I kept on calling amazon customer care and sbi customer care from past 50 days as if i don't have any other work. I was really fed up asking them the same question 100 times with each and every one from where not even once i got proper response. Hope at least this will help me in getting my refund soon.
Regards,