Sim Swap Disaster

Upgraded my account at Gateway KZN, on the 5/12/2020 did a sim swap and all the time spend calling them , and not answering their phones most of the times, and call the call centere I am still unable to my contract, my other contract took , my last sim swap took MTN 7 Months to resolve, after I had to call the managers and put them in a conference call to try and resolve it, now back again with the same problem ,