Angry cannot describe this

I have had a problem with mtn now for more than 3 weeks. I have tried to contact various people at mtn without anyone of them being successful. I moved from contract to prepaid on 28nov and since then my number is not available on the mtn network this has created alot of problems on my side not having a contact number where everyone can reach me. I have resorted to go to my bank and reverse theyre last debit order to try and get their attention to resolve this but still mtn seems to be totally *********** in getting me back online. I hope that you could please assist me in this matter.