hi, i think im right in saying that the the engine timing is now out, are you sure the the rest of the engine is ok,
i know when you have the cambelt changed you have to be careful not to move the camshaft and the crank as this ******* up the timing,
how did you get the car home, aa/rac recovery
did they give you an idea of what was wrong with it,, if not, if you have home start with aa/rac, get them to come and have a look, if they wont fix it, they will take you to a repair garage, who will know how to set the timing back up, and tell you if the engine has been damaged
my local garage charge me � 26 ph
good luck