Canara Bank — I'm complaining regarding the book (subtle art of not giving a ###, the refund hasn't been sent.

Address:

700106

So Amazon has claimed that they have initiated the refund and it has been sent to the bank. But it has been more than 2 months and the refund is not showing in the bank. I called them so many times and they are claiming it's the banks fault but when I spoke in bank they said that money hasn't been sent. Amazon niether sent the book not the money. I don't know what to do it's been 2 months. Refund was supposed to show in my bank by 23rd of August and it's 10th of October today. Please help me out with this situation.