Horrible experience with comtel

I called comtel on a Friday afternoon telling them about intermittent connection issue and I am working from home I am really struggling with their on an off connectivity because it connects less than a minute and kicks you out the whole day. Someone who was helping me in the phone said they are aware and they are fixing the issue in the area, so after fixing that issue my connectivity got lost to a point it does not even appear in the wifi connection list, what ever they did to fix they broke mine. Now they saying a technician will come and charge me a fee but how, you broke my connectivity in whatever you were doing then you want me to pay for it but I get charged of using your Fibre every month, now on top of that when you fail to fix your thing you want to charge me for something you broke yourself what's that, how are you maintaining your Fibre with your customers if you can't fix what your broke because there is nothing I did on the installation. This is all nonsense.