Pathetic service

Absolutely pathetic service from MTN. Have had issues with my account since April 2020 and they still, to date, cannot sort it out. I have been to 3 different stores, been in constant communication with their messenger service and all I get is "we have emailed and will provide you with feedback shortly" - I never get feedback, email their legal department every second day with no response whatsoever from anyone and you cannot get hold of them via phone because they don't have a number, called the contact centre and they say they can do nothing. Our business line has been down for the past month (for the second time), and no one can seem to assist in any way at all. No matter how many times I send through proof of payment and proof of emails and all communication, no one can seem to sort out our account or allocate any payments so they are saying we owe an excessive amount on our account which is incorrect but no one can seem to sort it out even with all the proofs of payment sent etc. The communication and service received from MTN has been absolutely pathetic with regards to sorting out our account and we have in turn lost a lot of business because no one can get hold of us on our business line. Who is going to substitute what we have lost in revenue for the past month, I'm sure certainly not MTN!!