No customer service at Standard bank

On the 29th of June 2022, I did an online purchase on the Checkers 60 app, yet it kept on showing repeat payment. However the amount of R514,90 on order ***6 went off my account. On Monday 4th of July I went to Standard bank Centurion Lifestyle, and was told that they could not do anything even though I showed them that on the app the purchase reflected that payment was not done, and I did not receive anything from them. The consultant e-mailed someone in Standard bank to find out if my money was in a suspense account and would call me. She did not call me or sent me an e-mail. Checkers just says they did not receive any money as the order was cancelled! However the amount is still showing waiting for outstanding card authorisation. It is scary to think that I must trust a bank who do not care about my money. They are very quick to take money for any transaction, but an amount that is hanging in the air on your account is not so important! No wonder they are not the number 1 bank! Standard bank reverse that amount asap! It has now been a week today!!!