MTN has been over charging me for my data line

I am writing to you to express my desapointment against MTN.<br> Since April this year i have received bills that where very high and expensive beyond my normal monthly data payment.<br> I have made several calls while MTN were on strike, i have been more than 5 times into their office in Rivonia to question why my bills were high then normal. In my surprise no one from MTN has been able to address my concerns.<br> Since April to date i have been receiving high bills, it now sitting at R52,988.37 for Data!!! <br> In the passed 4 years i have been their customer, i use my 3G for emails and even when i go on FB or youtube i have NEVER reached a bill of R52K. <br> I have made calls to their call centre and been to the Rivonia office requesting:<br> 1. an itemising billing<br> 2. a URL report <br> 3. that MTN should investigate this matter and find a way of stopping it immediately cause i do not and did not use data for R52K over the passed months<br> <br> MTN has never address the matter and Not even been able to respond to my queries.<br> I recently sent them an email on the 10 Sep 2015 and i still dont have any response from MTN.<br> <br> This cannot continue like this.<br> All i want now is to cancel my data contract with MTN