Disgusting Service

We have 5 phone contracts with MTN. All needing upgrades. I spoke to Charleston Muthulinga from Empowered Outsource mid March. I said to him i need to sit with my nephew who knows about contracts. He started calling me a few times a day while i was working. Eventually i had to block the numbers! On the 16th of March he sent me an email with upgrading options. I wrote back again saying i needed to be sitting with my nephew. On the 9th of April I wrote an email saying ill be sitting with my nephew the following week, can he please call me. I sat with my nephew on the 21st July to try upgrade our contract with MTN. Only to find out after many hours that Charleston Muthulinga had upgraded our contracts without my consent! MTN didn't even have a number for him or his company. Nokwandla gave us a Ref number. Nothing changed. 28/4 we went to Norwood MTN, Lindo tried helping me for hours, Noone could help her /either. I called MTN got another Ref number. 4 may Rivonia MTN, Yvonne emailed Chanelqueries, said there's nothing she can do. Charlston and MTN contacted me saying they wantwd to help me save money! Really?? I don't understand how MTN can do this to a really loyal customer..