Wordless on poor poor service

I have a cel contract with mr price mobile. Last year I was advised to pay R470 to have the account settled and closed. A week after I was given this amount I sent an email to confirm if this amount was the same or had it changed. It was confirmed the same. I immediately paid the amount and reply to their email with the proof of payment. 3 days later I received a call asking to make payment of the same amount. I told the consultant payment was already made and sent the proof of payment to her. She confirmed receipt of the pop and advised I will received the paid up letter I 2 weeks. Since october last year I have sent 10 emails regards this matter with the last 2 in this week. They listed me for R140. Till now I have not received a email confirm receipt of my request to have this matter looked into or even a phone call.