Poor Service from telkom stuff , callcenter stuff does not know their services!!

Telkom's auto provisioning of VoLTE, VoWIFI and 5G has failed on my simcard. I have been trying to explain this/ ask them to re-provision for more than a year. The call center does not know what to do. they read off a manual and if it does not work then it is my phone. everyone is activated on my phone and verified! next option for them is to tell me to go to the telkom store . Telkom stuff does not have knowledge of what Volte is, let alone the access to check . so no one in this company knows how to activate Volte? do I need to port my number to pay and get better call quality? what I am paying for now is poor quality.