Bad service

I bought a windscreen from pg glass willow Bridge on the 22nd of December 2023.. I had a booking to have the windscreen fitted at 3pm.. I got to pg glass about pass 2pm nd I waited .. 3pm came no windscreen yet because it still had to be delivered. The windscreen only got there pass 4.. I've already waited over an hour .. The technician that was gonna fit it told the sales lady his not going to do it because his not feeling well, when the technician just finished installing a windscreen in another car... The sales lady asked if I could come back on Wednesday the 27th of December and I told her I can't because I'm working.. I told the sales lady the technician must come out to me because him here on the day I have an appointment to have it fitted.. Up until today I don't hve my windscreen fitted and it's almost a month.. I have asked for a refund and still haven't received my money back