MTN unable to RICA new contracts

My wife has been trying from Saturday to open a new contract with MTN. We arrived at woodlands with all the correct paperwork. Today her number was ported. She is tottally out of comms, because the old number is now dead and the new number is not available on MTN. The store is totally and utterly useless and the manager not available, we have now been there 3 times to sort it out without success. MTN 135 just say they cannot help. We must talk to store. MTN now have a contract and they just couldn't care less whether the client can actually use the phone or not. This is now on a client that was easily approved and on a new contract. What do they do when you an existing client have a problem and new businees is not involved? never again. Rather pay more for at least some service