MTN atrocious service!!!

Good day,

I have been making use of MTN's services for 26 years now. I took out a contract with MTN in June of 2020 and ever since that day, I have been having problems with paying via EFT. I am 73 years old and even during Covid-19 times I am expected to go to a physical branch to pay my account. The assistance from MTN has been atrocious, from them sending me banking details that do not work, to them telling me it's a problem on my side. They even went and chanced my account number without notifying me of this. When I try to pay via internet banking, the new account number that I provide gives me an error. I have to stay in the house to protect myself against the virus and because of this I am unable to pay my account. I even went to my bank and even they said the solution that MTN provided, does not work. I am lost for words over the service provided by MTN. I would appreciate any assistance regarding this matter. Quite frankly, MTN has lost my business for the future. But, since I have this contract, I am forced to deal with this poor excuse for service. How can a big company like MTN not have banking details for contract payments... They must really hate money or good service...