MTN incompetence !

Our Company closed down end of June, and allowed us to keep our phone numbers. The Company paid their final invoice on 17th August, and MTN confirmed payment received, but the transfer of numbers are still is locked today, which means we can't transfer the numbers onto our names, MTN is keeping us from doing so. The contact person Rhegana assigned to handle this does not answer our calls, terminates the calls if we phone her - we are now without phones for two weeks thanks to MTN, totally unacceptable !