MTN useless customer service

A ********** upgrade was made on my account last month. It took me the entire month to get a refund from MTN. They apparrently reverted the contract back. Now at end November no deduction from my bank for this account, I do not know why. I tried to email customer serves and premium mtn- NO RESPONSE AS USUAL. Phoned 135 phone just goes dead after a while, tried several times, eventually I held on for about 10 minutes when someone answered and told me the system is slow they cannot help me. NICE SERVICE MTN is very good at appologising for their lack of service. They should be called "MTN SORRY FOR THE INCONVENIENCE" Ithink that is what they teacb all their agents. Be very alert when phoned they upgrade you if you sneeze. Refrain from telephonic upgrades.