What can MTN do Right? NOTHING

MTN store ****ed up my mums contract (which is on my name) and they were supposed to change it to the correct package. Instead they changed my existing contract that I have had for years. This issues has been open for 6 months now... when they finally 'fix' it..they fix the wrong contract. The *** number has been my contract number for years now... and it has now been changed to the wrong package. <br> The number that the change was requested on was ***. I use my phone for work purposes... honestly... this is ridiculous. Please sort this out asap. This is absolute ******** now. I am tired of complaining and getting no where... who do I even call to resolve this!!!!! FIX THIS!!!