hi guys, a couple of weeks ago I took my car into the garage to have the air con re,filled, I have only used it about a dozen times and now it does not work anymore, what I mean by that is there is no cold air blowing out, so I whent back to said garage and told them wot had happened, they said oh it must be leaking out somewhere bring it back in on monday and we will re,fill it and check for leaks, now my question is how much more money is this likely to cost me? as I have allready paid them 49.99 to get it gassed in the first place, are they not obliged to re,fill it for free? as I can see this bill going out of control.

any help would be great..

cheers..chris..