AIBU to complain that the engineer who fitted my new boiler has damaged my carpet? Boiler is in the dining room; fawn carpet now marked with red brick dust around the edges of a corner of the room. He had a few sheets down but was not that careful and now I have horrible dark red marks on my 6 month old carpet. He said he's cleaned it up as best he can and you have to expect some mess when doing work like this
ABIU to complain?