Disgusting MTN service

I am so sick of chasing MTN and disgusted with their poor service. After several futile calls and emails, as well as Facebook messages to them to cancel my account and contract with them, there is still no hope. After receiving cancellation confirmation, I receive a Mondo call a week later that tells me the account is still active and offering me some stupid upgrade and cover. Now the audacity to still debit my account for a pathetic service I didn't use and canceled within the stipulated 10 days because of MTNs failure to even just help me to activate the stupid service in the first place. I am livid and I want my money back. I didn't want to but now I will be naming and shaming MTN SA and contacting the CEO. What disgusting and shoddy service!