My AA experience is not so good either. 
Driving up M1 head gasket goes on my car, steam everywhere, call AA (I had relay) 
tell them head gasket has gone and to send a relay truck. What turns up a man in a van 
after about hour and a half starts the car, and tells me head gasket gone and I need a relay truck..AHHH !. 
2 hours later a relay truck turns up, picks up my car and another car, then drops off the other car first tells me 
he has to got to the depot in Pinner and change shift as he over his hours, I first called them at 10.30am 
on the motorway just outside Luton its now 8.30pm and I'm stuck in Pinner, so I get a cab from Pinner to home 
and they will take the car to my place of work as its was my Company car, I get home at 10.00pm so 12 hours 
to get from outside Luton on M1 to home in north London 
  
I then get a call from the AA Control centre at 12.30am to say the AA relay truck with my car on has been involved in 
an accident at Marble Arch and my car has been badly damaged...IT WAS WRITTEN OFF..!!!