car starts but wont idle??
 

not sure if this the right place
my a3 was working fine this morning gone
back to it later in the day and it wont start
it starts but wont tick over idle
its a 61 plate 2.0tdi sportsback
if I turn the key lots and lots of times it will start eventually
any help please

as of this morning I rang the aa to look at car it turned out its the timming belt
its not moveing going to garage hope it not costly