Billing items NEVER asked for

I renewed my contact in Dec 2014 and was billed correctly Jan and Feb for R 499. <br> But then I start getting billed R 579 for data bundles I did not sign up for.<br> <br> I have been with Afrihost since Nov 2014 and therefore don't need extra data from MTN.<br> <br> Emails to Customer Care do not work and the phone just rings when you phone Cavendish Branch, this is where I signed up my contract.<br> <br> I will not pay for services I DO NOT USE nor EVER SIGNED UP FOR.<br> <br> There is now a backlog of R 1200 odd \owing"and MTN Accounts says I must phone Customer Care.... who can't help me!<br> <br> I demand the rightful correction to my account to clear my credit rating<br> <br> Liz? Baxter<br> """