My week from hell with Vodacom fibre

I've had a week to forget with my ISP since 2021-05-06T12:00 SAST. My internet just switched off at that time and until now it's been back-and-forth with Vodacom. What is strange is that it works perfectly between midnight and 7 am daily as if I'm on night shift. If I switch off the router for a few minutes during the day, it works for about 5 -10 Min and drop off again. I can't work, kids can't do their school work and yet I continue to pay. What is painful is that the issue is not even a priority to them. Yesterday around 9am we phoned to follow-up on our ticket and we were promised that a technician was coming over to take a look. We cancelled everything and waited until 5 pm. We decided to call to find out if they were still coming, only to be told that the person who promised us a technician has gone home. To think everything on my side is at a standstill. Everytime I phone, i have start explaining the issue from scratch.