MTN cannot find my payment despite sending me a receipt via Email

On 13 September, my service was suspended for non-payment. My payments are made monthly via the MTN App. My most recent payment was made on 04 September and I have received an email receipt. In addition, I have confirmed that the amount was taken off my account.

After numerous calls to a Call Centre that was unable to assist, I visited the MTN branch at Fourways Mall. My line was unsuspended, but the payment issue hasn't been resolved.

This is unprofessional. My account is always paid monthly. Your Call Centre agents instead suggested I speak to their legal department for a matter that isn't a fault of my own. My account is PAID and I refuse to allow MTN's incredibly useless system to affect my credit scoring due to a negative listing.