Pothys — Double time amount debited

Yesterday (23/04/2023) around 17:45 hrs, I purchased a product from Pothys, Chromepet, and gave my SBI card for payment. First the person at the counter swiped my card and said that his machine responds, ' Transaction declined'. He again tried it with another from adjacent counter and this time the transaction was successful.
After some time only I got the message from the bank stating two debits were made from my account for Rs31800.
I kindly request you to look into the issue and revert back the amount to me immediately.