Mtn bad service and no help!!!!

Good day since relocating my WiFi router hasn't been working. I called mtn customer care and one of their consultants assured me that my new address had been updated on the system and I needed to wait 48hrs for my internet to be restored. 48hrs later no WiFi networks restored. I then call 135 to speak to agents hours later still no one to assist. I have been sent through to their fibre service and technical support care line with no help. Finally I went into a mtn store near where I reside and asked for assistance. They changed the location to my new address and told me to wait a day. Still no internet? So mtn in Johannesburg to Durban can't help with me getting my WiFi up and running. Should I know change service provider?