Amazon — Money credited

Sir/ Mam
I Pankaj Kumar Singh made a transaction of rupees 300 and 50 each on 7th February 2021 through Amazon, but the payment was failed and the money was deducted from my account, I called them and put my issues to them but they say" they don't get any such payment you have to contact to your bank and let them know why the money was deducted after a failed transaction "..
Please help to get the money back as soon ..