MTN Calls function not working after a swim swap

17th June I app**** for a swim swap and it was approved 19th June but I then could not make calls or receive them. Visited a branch and was given a number of codes to use with 10 mins intervals where I would need to switch my phone on and off but still the problem persisted. I have from the 20th June called the call center line close to 12 times and each time I am told a different story which include 24hrs waiting period or being directed to visit a branch, which I have all done but still the problem hasn't been resolved. Called today around 08h30 and was told they are still waiting on a response from the back office and I should call back at 11am. Called back at 11am and was told such queries could take up to 7 days. And the consultants there have no courtesy to explain anything, they are quick to say sorry and drop the line. I am beyond frustrated now and I need for MTN to tell me if they can fix this or not so I know if I should just change networks altogether and this is sad because I have been with MTN for over 15 years now but the lack of service I am getting is really horrible