Mtn service is atrocious

Once again mtn has made me very angry and disattified. For April 2024 i never teceived an invoice stating the amount due. To obtain the invoice i used the mtn app on my phone which was unsuccessful. On the app i could see the outstanding amount due.Mtn was notified about this matter.The other issue i was battling with the unsuccessful debit order for February and March. Numerous mails was sent in this regard. It took.mtn long to resolve the issue and tto change my method of payment.Today i received an sms from them stating the outstanding amount for April.2024 was not paid. I sent them a mail.that today was the last day of the month. I feel that i am treated unfairly regarding this matter. I have been a loyal customer of mtn for so many years and never defaulted and had an invoice which was not paid.I am not a damn ********. I also received an sms today in which mtn brags about providing service for 30 years. In my view their service is atrocious. for failing to resolve issues. The only thing they can do is apologise which doesnt resolve the matter. They have not reason to brag at all due to their incompetance and bad service.