Really bad service

I app**** for their Fibre promotion in May. I received the call to finalise the order the next day. I had advised the agent that I was not at the premises, that we would only be moving in in June. She advised that they will install then. I get a notification that my Fibre will be installed on the 23rd of May(a Sunday) , after I had told her I would not be there. I phone on the 23rd and asked the appointment to be moved to the next weekend. I get told that I cannot change the. Appointment on the day it is booked, I need to phone back after that date. Which I did twice. The 5th came and went and I called that afternoon to find out what was happening to be told that they don't work weekends (after the first appointment was on a Sunday) They then scheduled the appointment for Monday, which I said would not work because there is no one home. I phoned again and they told me they would make a special arrangement for the 12th of June, only to get a notification they will install on a Thursday. I phoned again and then they refused to help me with a weekend and now I am not sure if I will ever get my Fibre installed with them.