OK, I sort of am. But it's sooooo annoying!!
We exchanged contracts over a week ago and were due to complete today. Our solicitor rang to confirm completion at 10am this morning and told us to go and pick the keys up from the estate agent. DH went, keys weren't there 
We were told it would be one hour tops.
Two and a half hours later, still no keys. Estate agent rang them and they guaranteed keys would be there by 2pm. When the keys still hadn't arrived at 3.45pm the estate agent rang again and they said that they were on their way in the van to drop them off (the property is about a 1.5 mile drive from the agent).
5.30pm still no keys, agent tells us that they close at 6pm but that the owners have agreed to have keys to them by then.
6.05pm agents have closed but assure us that the couple have agreed to drop the keys around to our place 'at some point tonight'.
The thing is, we are in a rental and tenancy isn't up yet, so it's not like we had to get in today, but the kids have been so excited and waiting all day and it's now 7pm and I've had to put them to bed.
I'm also concerned that with the snow predicted to get worse we won't be able to get what we need to done before we get snowed in and won't make it to family for christmas 
The bit that will probably convince everyone I am unreasonable is that they have an 18 month old and are due another baby in february, so I'm being a bit heartless trying to kick them out. 
I just wish they'd said they couldn't move until wednesday or even at 10am 'sorry, we're nowhere near ready, it's going to be a few hours' rather than 'we're on our way' every time we ring!