Unreliable network. Poor technical service Unreliable technicians. Difficult to report problem

I am permanently working from home but for at least the past 90 days I am using data from my 3G account . The first 2 times I called, I was told that there is a problem in my area. Because it takes so long to get through to the technical service department and the fact that I am too busy to take 30 minutes just to be told to switch off my router. I carried on in the hope that the problem will be addressed. This week I insisted that a technician must come out. After a day, a technician came out asking me where the point of access is and didn't believe me that my signal on my laptop used to work. He replaced the router, but said that there is a faulty cable an made an appointment for someone else - a certain Godfrey - he subsequently could not come on time and after 3 calls said that he would come the today 26 March at 10 am. It is nou 6 hours later, and he has still not arrived. So, I still don't have home Fibre service.