1 Week after doing SIM swop - NOT DONE

I did an upgrade of two of my contracts on Monday 12 Oct at Game Midlands Mall. They were very helpful. I was informed that, due to *****, I could only do a SIM swop at a Cell C store. This had to be done as the new phones take a smaller SIM card. The following day I did the swop at Cell C Midlands Mall. By the end of the day the one cell had be done but the other NOT! On the Thursday I contacted Cell C on 140 and they said that it had to be forwarded to the correct department. Bare in mind that now neither the new nor old SIMs were functional. On Friday afternoon, I had to call back and was told that it was still in process but would only be looked at on Monday the following week! Monday now and still nothing!! Now I'm told to contact the store!! No-one has taken ownership! No-one has sorted it out yet I will still have to pay come month end!! What am I paying for when I can't use the phone!!! With 4 contracts with Cell C I would have thought I would be a valued customer!! I will be changing service providers!!!