MIGHT AS WELL NOT PAY

It all started with a message on my WhatsApp stating that I'm in arrears on my account, I then went into my mobile app checked December 2024 statement and it showed I paid more then the minimum R300, I paid R500 for December 2024, now I get a message of demand that I'm in arrears, I have to pay R623.74, I call the call centre agent and she was of no help, I explained to her, the statement sent to me asked for December 2024 a minimum of R300 must be paid, I paid R500. She said that because I paid on the 17th of December 2024 which apparently is the same day the statement closes – my payment had been disregarded.

How is it possible that you can see that I made the payment on the 17th but you still say that the account is in arrears. Now our credit reports will be affected because of R 300 that was actually paid