MTN does nothing about it to resolve the case

My Name and I/D number was Frequently used to open an account in JUNE 2012. When I first received a statement from MTN (partly correct address, but luckily it came through to me, otherwise I would not have known about it) for an amount of + - R1177.25, I immediately responded to the MTN Webmasters email address outlining my case. Alice Van der Merwe responded on January 23, 2013 stating in an email that the Account is Closed but the file is with their ***** Department. I have also been sending emails to other contact persons within MTN who requests further information from me. I comp**** with all the requests. I have not received any notification since then, until an email from Shapiro Shaik Defries & Associates now requesting an Astronomical amount of R11 340.18. This is absolute negligence and POOR Service from MTN as I opened up a case with them, so it should not have been sent to Legal. Also this matter is now ongoing for close to 3 years with each month more fees added to this ********** account. This should have been resolved/finalised within 6 months of my representation to MTN. This is causing me MUCH Frustration and Anxiety until it is finally resolved.