Incorrect credit card account

Please assist I did transfer on the app for my Standard Bank credit card but Standard bank is saying that the account number is incorrect but it us pre filled on the app I did the first payment on the 30/11/2020 R 200 and the second one 01/03/2021 R300 I went to Standard bank with proof of payment but I'm not being assisted. I went back to Capitec and I was told a recall would charge me R160 which is a lot please assist with allocating the funds cause they account number is wrong on the capitec app.