Poor service

I app**** for fibre internet at home via Jumbo Tech. I was advised that Openserve will be installing the fibre. They called me on Monday 20 August to confirm if I will be able to open or them on Tuesday 21 August whereby they never pitched or even let me know that they will not be able to make it. I received a call again on Thursday and again took of work in order for them to install the fibre on the same day. The internet was working fine that afternoon but when I got up on the Friday morning the internet was off again whereby I contacted my service provider (Jumbo Tech). they then sent out one of their technicians that confirmed that it was a problem with the installation on Openserve’s side. They then asked Openserve to come out whereby they advised that they will come out on the same day (Friday) but they never arrived. Eventually (after losing work for 3 days) they came out and discovered that the installation was not done properly with the connection of the cables.