30kbps instead of 80mbps fibre ******* and terrible customer service

I ordered fibre installation on the 13th of May, to even get them to come to my house for an installation took calling daily and being met with attitude that the installer will call me when ready. The installer finally arrived on the 20th, he initially said 11am but only came to my house at 15:30, again I’m the one who had to follow up. Guy had low energy, complained about the structure of my house indicating how this would take a while and how difficult it would be for him to do this alone. I mean I shared my address, it’s not my fault they didn’t come prepared. He then went on to do a shoddy install with wires hanging loosely from the antenna even after we asked him to do a neat installation since it’s visible and at the front of the house. We couldn’t even check because by the time he finished it was dark. The WiFi doesn’t reach a part of the house and this guy couldn’t be bothered, that’s our problem apparently but what sucks is that we haven’t had decent WiFi since. I had to watch a 4min video for 20 minutes cos it kept buffering. I can barely work, all my files take a while to load. I logged a ticket on 26 May, again having to follow up daily, we did speed tests the highest download speed was 110kbps, on 28 May I called to check if my ticket had been escalated and this time the speed was 30kbps, this all on a 80mbps line supposedly. No one seems to care, I must just wait. They even corrected me that tickets get resolved with 72 working hours not 72 hours. I mean I logged my issue on Tuesday, it’s Friday evening and it’s still not resolved.