Worst Service Provider!

I moved in in one of the rental places in Pretoria in February 2023. One of the things that attracted me to choose that rental place because is because they indicated that you get free unlimited fibre just for renting from the place. I completed all the forms including the one for a fibre service provider which is Metrofibre. All was in order for me to move in, I moved in the 1st of February 2023. I then found a router inside the apartment. I switched that router on, and connected using password displayed on the device, and was able to connect all my other devices including my TV on the same router. All worked perfectly well. I could stream live DSTV etc without any buffering. Few days later I received a call from a Technician, who said he would like to come in and set me up. I said to the Technician, it looks like I'm sorted since the router is on and I can connect. The technician then left me alone. I enjoyed uninterrupted fibre internet connection. In March the services stopped all of a sudden when I called metrofibre I was told is because I didn't allow the Technician to come and set me up. I was advised to complete another form and the Technician will be dispatched to come and connect. The Gentlemen came, after he left that's when my problem started. I could not watch anything on TV for more than 2 minutes because my TV will start buffering. The buffering continued non-stop. I phoned metrofibre support , without any assistance. I was given a reference number and it took metrofibre more than 8 days without contacting me , I followed up I was given an assurance that some will contact me and to date no one contacted me and I'm still experiencing the same problem. Someone send an email claiming the problem is my dstv which is untrue , since I connected before without buffering. What a pathetic service I have received from metrofibre. I also think this is because the service provider does not care because they seem to have monopoly as an internet provider in the building which in my view contravene the competition commission. Can some one attend to my issue, otherwise I will get other service providers. This is the worst service I have received t date!