Think alot of it depends who they send out and if they have any common sense at all!! Ive had good and bad use of the RAC, the most recent was good as a pipe clip broke on my 306 TD (the bottom rad pipe pushes in and has fragile plastic clips stopping it coming out not jubilees!!) and mine gave way and pipe came out loosing all coolant. The bloke who came out used a million cable ties to hold it in and its still ok now!! althou was supposed 2 replace the clips bout 4months ago

But with my cossies over the years had nothing but agro most of the time!!! They tend now to send a van to tow even if u state u need a flatbed had that plenty of times!!! Once the clutch cable snapped when i was in town and asked for a van to come out as most have diy cable kits and could make a new temp one up!! after a few hours a spek lorry turns up who says he cant tow its too low, exactly what i said on the phone 2hrs earlier!! so then had to wait another hour for a flatbed to turn up would have been quicker getting a mate to bloody tow me lol.

But basically if he lost parts on ur car and has damaged anything in the process they have to replace/repair. I know someone who had a coolant pipe repaired on their car and was told it was fine to drive home, blew again fooking the engine and they paid out for a recon engine in the end!!