Suspended service every month

I have been a loyal customer of MTN for years and have been experiencing trouble with my account since September 2020. I received an sms as follows:

1. 23 November 2020 Yello Customer!! Your Order has been Submitted with Order Ref no: 1-*********. Thank you for using MTN I immediately called the CS as I did not place an order, I was then told it is a system error and the CSA apologized for any inconvenience caused.

After the call I received the following sms: 2. 23 November 2020 Y'ello! You've agreed to pay R'X for 1 day from 25/11 to get your MTN account up to date. You begin payment on 25/11/2020. Pay in-store or via your bank. and use billing profile BA****** as a reference. You can find the banking details on your invoice.

Which confused me as I pay my account every month on the 25th.

I have received many messages every month since. I spoke to more then 20 CSA's.... every month they give me a different story as to why my account gets suspended.... I was also told that my August 2020 payment did not reflect as MTN changed systems and I need to send a p.o.p.... which I did and received an sms confirming that the payment has now been allocated. January 2021 my services got suspended on the 27th and I made my payment on the 23rd.... just to be told that I need to now pay on the 17th of each month..... I really do not know what to do as I receive so many different stories from CS and each month since September 2020 they suspend my services. No one really fixes the problem and I am so frustrated with MTN, I am now at the point of wanting to cancel all 4 my contracts with you.

I am hoping you will sort this out as I pay my account every month for the past 10years on the 25th of each month and I have never had problems until you decided to change systems.