Mweb fibre

I recently upgraded from ADSL to fibre with Mweb. At the same time I ported my Telkom line to Mweb so I could have VOIP. Big mistake. Mweb and their engineers cannot get my voip to receive calls. I have no home number and no solution. People promise to sort it out and call back but sadly that's just not happening. I give Mweb one last chance to sort this out or I move to a service provider who cares and can offer the service.