Unnecessary Debit Order deductions

I need help with Telkom. In November 2024 I finished paying my contract but due to my last payment which was late, I inccured a penalty fee which is R202,70. I paid R203 on the 23/12/2024 of the penalty fee that I owed. The very same day I phoned the Telkom billing department concerning this penalty fee that I just paid. The consultant told me that the penalty fee that I have just paid will reflect on their side after 48 hours and after it reflected, I will no longer owe Telkom anything as my mobile phone contract with them is done. On Friday the 31st of January 2025 Telkom debited R202.40 in my account and the debit bounced and it cost me R77,73 of extra charges in my bank account. I had to go and pay another R202,40 on the 03/02/2025 of which i dont owe them according to the last conversation i had with their billing department on the 23/12/2024 and also because whenever their debit bounces it costs me unnecessary fees from my bank account. I'm not happy at at all with Telkom because I no longer have a contract with them and I no longer owe them anything but they are busy debiting my account. I also want a refund of the R202,40 I paid yesterday plus the R77,73 I inccured when their debit bounced. My Telkom account number is ***. Your help in this matter will be highly appreciated, thank you.