MTN Mondo – Shocking customer service

I have effectively been without a cell phone since the 24th of November, when MTN Mondo made an error with my upgrade and linked my current SIM card to a Wifi router. I cancelled the contract on the 24th of November and requested that my SIM be migrated to pre-paid. I have probably called the call centre over 25 times, gone into MTN Direct 4 times and still to date the cancellation has not been processed, notwithstanding that I am being charged for a service which I am not receiving. I have spoken to numerous customer service agents, Amanda Joseph, Zandile Shezi, Mandisa but to name a few and I am either provided with incorrect information advising that my contract has been cancelled and migrated when in reality this is not the case, to that the cancellation is still pending with the cancellations department. I am promised that I will be called back with an update and this never happens. Every single day I do not have a cell phone, my life is in danger especially as a female who in an emergency would have no way of contacting anyone for assistance. I am absolutely astonished by the lack of care and utter disregard for a customer who is in dire need. MTN made this mistake and now I am suffering on a daily basis! I am literally at my wits end in my efforts to get this resolved. If anyone has experienced similar and made progress please let me know.