Amazon India — refund of rs. 1798/- in bank account

Address:

Kanpur, Uttar Pradesh, 208017

I had placed a order (Order no.[protected] for one piece of lifelong power pro plus llmg03 750-watt mixer grinder with 3 jars on 14.10.2017 which was delivered to me on 17.10.2017 and i paid rs. 1798=00 through sbi debit card. But due to some problem in the mixer grinder i return this order on 18.10.2017 which was received by amazon on 21.10.2017.in turn refund of rs. 1798=00 was issued on 18.10.2017 but till date refund has not been credited in my account from which money was paid for this order.