Botched Cell Phone upgrade!

I recently upgraded my contract and only my sim was delivered to me yesterday. Upon enquiry I was advised that the device should have been delivered as well and Zama Swazi confirmed that she would handle my case and ensure that I get my new device within a week. In the interim she advised that I use the new sim in my old device as it had been rica'd and my old sim was no longer active. Today my services were just cut off and when I called in an hour ago I was told that my number has been ceased and I need to contact cancellations. I never requested that my contract be cancelled and nobody has contacted me with regards to this issue. I am currently sitting without a working number now! I am being told that my number does not exist and that an order has been done on a 067 number now and a sim swap is needed! I cannot change my number - Telkom needs to rectify this immediately!