Very Poor Service by MTN

I received very poor and unprofessional service from MTN. I migrated my line to a contract line with MTN and from the moment I move to contract, for every number I dial, was told " the number u are dialing is incorrect". On top of me not being able to make any call, all my airtime and my minutes keep disappearing. I called the call centre approximate 30 calls and was told to do a lot of things including sim swap to no help. Instead I was told that my number is linked o another number ********** and no one could provide a solution. I then asked to speak to a supervisor and was give to a guy called Msizi Tshapa who could not help after two hours with him on call. He promised to investigate the issue and come back to me which he never did and I called the call centre and asked to be transferred to him and they say they don't transfer calls. I then asked if the consultant can sort out my issue and she was clueless. I received contract package with 50minutes and with few hrs at 31 minutes disappeared. I am going to return their contract phone and migrate to another network provider after 13 years with MTN. The service is so sub standard to say the least. I do not recommend MTN to anyone reading this publication.