telkom intermittent connection/openserve poor service

ever since there has been an upgrade with the exchange that services my connection, I have gone month with intermittent internet access, either during the day until 19:30 or from 19:30 till 5:30. I have logged several calls since 15 september 2019 and each time I get an sms that the openserve has fixed the issue and every evening (this time around) I still sit with the same problem. I set up my entertainment viewing around the uncapped wifi and now it has been of low use since september and I am only all most a year in on this contract. I might as well have paid dstv and not telkom with this current service. call centre agents can see the intermittent connection but cannot analyse and find where the problem is, it is then sent to openserve to solve and it doesn's get solved and no one communicates that they found or did not find a problem.