Oh that sounds horrendous, what a terrible amount of stress you must still be under. :(
I still feel vaguely traumatised by our move in June, we had weeks of being messed about by our vendors who were pressuring us to exchange by a certain date, and then went completely silent on us for about a week and a half when we tried to exchange according to their deadline/timeline. We thought the entire chain would collapse, expected them to pull out, etc. They didn't have their deposit money arranged (various pots of cash in different savings accounts apparently) and then their vendors were having issues with their own purchase, but nobody's reasons made any sense, so we felt like we were being constantly gaslit and lied to. Awful feeling. We thought it would all fall apart at the last minute, for weeks on end we were left on tenterhooks.
Moving day, luckily the completion went through, but we ended up with absolutely shocking movers who left an entire vanload of our things behind that I had to scramble to sort out myself for the next day because they left it too late to tell us they couldn't fit everything into their vans on the same day. Long story short, I got a hefty refund back from the firm for their terrible behaviour which went some way to helping us feel better. Thankfully our buyers were in rented and started redecorating before moving in, so the delay in getting our things fully moved didn't cause them any trouble.
It was a shitshow, though, and we had small children and pets to deal with as well. Never moving again, unless under extreme duress. Ugh.