Non Allocation of Payment made ontime.

Once again I find myself writing a complaint about MTN. Ever since they changed their finance or accounting system, my wife and I have had endless nonsense, putting it lightly. Last month, we paid our account via the so called wonderful MTN App, that was around the 26th Feb 2021, not long into the new month, my wife gets an sms to say that our lines will be cut due to non payment. So we went to the nearest MTN store, and was told by the consultant that the reference used, which i may add in at this point was generated by the APP, was incorrect. So this past month end 26th March 2021, we made payment into the ABSA account listed this time using the Account no starting with BA. Guess what, MTN saying that no payment again reflecting against my Wife ACC. We once again went down to the closest shop, and they could not help us, guess they only know how to make sales. So we went to MTN H/O, we got there a little after 3pm today, and were told the Customer NON CARE DEPT, closes at 1pm, I MEAN REALLY!!!!!! When my wife called into the Accounts Dept. to RUTH KHUMALO, my wife was told that we needed to send in the proof of payment for them to Investigate. Now this really gets to me, WHY must we do all the running around / following up for you, surely that when a payment is received with the correct payment Reference, whether manually done or its run through a system, the payment should be picked up and allocated to the corresponding account. We really are getting annoyed now, and want this mess to be sorted or my Wife will consider moving our lines to another service provider.