Service failures on the Bozza network, rude consultant and empty promises

I initially took one contract with MTN and took another two contracts which is attributed to their exceptional service and alignment with their TCF principles. The service failure and unfulfilled promises started when i followed up on the paid up letter on 29/12/2020 where I spoke to Ndumiso Sithole call ref *** who claimed to be the subject matter expert(S.M.E). I was referred to him when i was asking to speak to a supervisor. He informed me to go to any MTN store to obtain a paid up letter as it is the only option to get it. I was dissatisfied with that response however trusted his response as an MTN representative. On the 30/12/2020 I took time off and went to MTN store Northgate mall where i was turned back at the door by Ronald as i was told they don't issue paid up letters. Talk about time and money wasted during a period where one is trying to save every cent and stay indoors in line with Covid 19 regulations. Going to the mall exposed me to the risk of contracting Covid 19, I then had to leave infuriated and dissapointed as what i was promised by the S.M.E nondumiso Sithole did not materialize. I called the contact centre on the same day where a spoke to a rude and dismissive consultant by the name of Kgomotso Modisaetsile call ref *** who told me He does not understand why I am asking for a paid up letter and I must see to finish. He further informed me that I can complain if I want to. He was unwilling to assist, did not care about me as a client. When i asked to speak to a manager He told me that management is not available, after 15 minutes of waiting, he spoke to his manager by the surname of Khoza, whilst i was holding. Kgomotso refused to give me the manager's name as the company policy does not allow him to. The manager never came to the phone. The call was then dropped. I called again and held for a long time till I got to another consultant who said they are working from home with ref number *** and promised I would be called back. At this point I am considering closing all my existing contracts and never ever patronize the brand MTN. I did not have a Bozza experience. All i was asking for is a mere paid up letter. How is that a Mammoth task?