Amazon India — refind not credited to account

Address:

410206

I have order on 29 aug s5 wireless headphon rs. 1999/- product from amazon. It was place order twice and once i cancel the one. But cancel item refund rs 1999/- still not refunded to my sbi credit card till 7 sep. My sbi card shows the bill of 3999/-till now. I have already ask so many times to amazon about it. They will answer me it will come to my ac by 5 sep. Yesterday i ask to them they will told it will come today. But today now they refuse to give any positive answer. Kindly do the needful