Disgusting service from MTN

I am still unable to receive calls and it is the 3rd day that the matter is unresolved. It seems as if my complaint is falling on deaf ears . I am really frustrated that MTN seems to not care about resolving this issue that they have caused, instead they are sending me all around. See email below that I received from them this morning sending me around again. Good day Hazel,

Thank you for emailing Customer Care.

We apologize for the break down in service and for any inconvenience we might have caused you. We would like to resolve the problem and provide better service going forward. Your number has been migrated to Prepaid, if you are still experiencing a problem with the number, please refer the matter to our Prepaid Help Desk, their email is: **********

Kind Regards, Prudence Ntuli Customer Services MTN SA