Very poor service from Fibre call centre

I opted for Vodacom Fibre to the home. Installation on Vumatel happened timely and my line was activated quite quickly. However my internet access has not yet been activated 78 hours after the line activation. I have made 9 calls to ***, without resolution. Every time they have to "escalate it to the back office" and every time they promise to contact me back. I have not had one call back. This is a standard installation, no special circumstances but they just can't get it to work