We had 3 incidents in 2 weeks last summer that led to a company wide meeting / shouting match between the crews and salesmen.
First, the job sheet read "remove 3 pines and 1 maple back left corner of property" We took out the 3 pines and an ugly mulberry behind them that we figured was a mis-identification. Turned out the maple was 40 feet behind that clump of pines. It was at a chinese restaurant bordering a residential neighborhood, they wanted to keep that mulberry for privacy until they replanted. Boss made good on that one.
Second was my doing. I ripped apart a marked norway maple at the right number on the wrong street. Salesman didn't put Place after the address and told me Avenue when i called for clarification. Oops, no charge buddy!
The third was the worst. Salesman wrote "take down large douglas fir" The yard had 2 firs, one 30ft and a 60 ft, and a 60 ft larch. We took down the large douglas fir, packed up and got a call about 40 minutes later asking why the larch was still standing. Headed back to find the homeowner staring at the douglas fir stump near tears because his father had planted one when client was born and the other when clients mother died. We planted a 25 ft american elm for him in that hole, as well as a fair amount of additional freebies.