Foschini disconnected my simcard and does not want to help

The 121 group called me over a year ago saying they had an mtn airtime promotion where I would pay R25 and get R50 airtime monthly. They gave me an impression that this was an MTN deal/promotion, never explained that is was their promotion and they were taking my number off of MTN and were putting me under a Foschini contract. I only learnt that last month when I went to MTN to get a new contract phone. I was told I would need a new number because my current number is under Foschini. I refused so they said I should go and cancel the contract with Foschini so the number can be back on MTN prepaid. Three weeks ago I went to Foschini to cancel, since then my cell number has been disconnected and I haven't been able to use my phone. The frustrating thing is they refuse to give me the call reference numbers or their names. Finally this one lady said she is Phelisa but still refused to give us the call reference numbers. They just keep telling me that my sim card must be damaged, I must Rica my Sim card, it is an MTN issue. They are just doing everything to shift blame but all I want is for my number to work. I went to MTN, they showed me on their system that they cannot do anything because the number is under foschini, so until Foschini releases it to them they can't do much. I was told to wait 14 days I did and the issue was still not sorted, told to wait 48 hours and still not sorted, told to wait another 48 hours because apparently the previous ones didn't do a proper job, I mean really, how *********** can one be, how can releasing a number take a month. I am really frustrated because I use this number for business and work, and you people decide to disconnect it for a month. How on earth am I suppose to do a Sim swap on a disconnected number. HELP!!!!!!!!!!!