Vumatel cut our fibre connection & promised to return to fix it but never did

Vumatel staff were digging outside my house on Friday to upgrade the network when they accidentally cut the fibre and left us with no internet, which 2 of us rely on for work. They promised to come back with an engineer that afternoon to fix the fault they created, but they disappeared and did not return. When I called the ISP to follow up, they knew nothing about it and this morning (Monday) I’m told there has still been no response from Vumatel and that it will take 24 to 72 working hours before we can expect any response. We now cannot work due to a problem created by Vumatel and we cannot expect to have this working for a few more days. Avoid this company, their service is absolutely atrocious.