MTN Billing threats of overdue to suspend account

MTN say that I am in arrears by a month. Each time I ask for which month they change it each time I send payment proof from the bank for the month they mentioned.

Invoice on 27/7/2025 has due amount to pay by 1/8/2025 - proof of debit order sent, this done for every month they query.

I even sent them a spreadsheet with their invoice ref# and then the debit order ref# or proof of paid in store via card, but they keep demanding that the overdue be paid.

I have a recording from one of their agents in Billing stating that the amount shown in my app now (7/8/2025 12:12) is not overdue but only due on 1/9/2025, so my account is up to date.

I also received an email which is contradictory, saying I owe but that I paid but that I'm overdue:

On Tue, 12 Aug 2025, 17:51 customercare, <***> wrote: Yello Rika,

Thank you for your email.

Please note the system shows that your account has an overdue amount of R1659.79, you had a rejected payment in June, then in July you only paid once, this payment covered the overdue amount that was not received in June.

So when we went to debit the July payment on the 25th, the debit was rejected, hence why you have an overdue amount.

The payment that you made on the 1st August repaid the overdue amount that you had already on your account.

Kindly be advised that the current overdue amount is for the invoice that closed on the 27th of July and the due date was the 1st of August.

We trust that you find the above in order.

Warm Regards, Philani Makhoba

All I ask is that Billing get this sorted out ASAP