Incompetence of the highest order

I have been a business customer of MTN since 1994 and my monthly billing has always been electronically deducted from my Credit Card via a Debit order on the first business day of each new month. Come January 2023 and MTN fails to process the Debit Order resulting in my receiving an SMS on Friday 27/01/2023 advising that due to non-payment all my services have been suspended. My Credit Card details have not changed and there is more than ample Credit available to honor the Debit Order, so it is anyones guess as to why MTN failed to process the Debit Order on the first business day of January 2023, however I immediately processed an EFT payment to MTN for the full outstanding balance 27/01/2023 and received a subsequent SMS confirming payment receipt, however as of Saturday 28/01/2023 all my MTN services remain suspended. I also emailed my business account manager, Mrs. Michelle Steyn on Friday 27/01/2023 with proof of payment as well as questioning her as to why MTN failed to process the long standing Debit order and to date absolutely zero response to my emailed correspondence. It would appear as per normal that the customer must now suffer due to the gross incompetence of the vendor as MTN failed to process the Debit Order which is 100% on them and furthermore even once payment was received in full their side (Refer to SMS confirmation they issued me) they appear to be too *********** to even remove the barring of services. I have support MTN for almost 30 years and this service is utterly unacceptable! Since it would appear MTN does not value its customers I will be more than happy to cancel all services and take my business to another service provider who values its customers as clearly there is no urgency from MTN's side to restore services I have already paid for in full.