MTN the worst.

I've requested my month to month number be cancelled and later to my shock, I realized MTN cancelled the incorrect number - my contract number. When asked how this could be done, no-one can tell me. Escalation requests to fix their mistake they've made but to no avail. I'm not getting any help! Been sent from store to HQ, but nothing. My clients can't reach me. I've been placed in a negative situation without any resolve from MTN that caused this, yet they expect me to pay for something I don't have. The only solution they give, is to take out a new contract.... How is that possible!!!! If this is not resolve, I'll be taking it up further with my lawyer and / or ombudsman.