Hi. Unfortunately you could be in for a big bill. I also went to Kwik Fit to get it regassed but they couldn’t find the port to attach the gas canister. Ended up booking the car in at the local dealer for an air conditioning service for £90 which isn’t that bad. After 2 hours waiting I was given a video report that explained that the condenser had been damaged, probably a stone, and all the gas had leaked out. It was also corroded which didn’t help. A new condenser is £730 from Audi. 2 independent German car garages both quoted £720. I have now gone back to the dealer I bought the car from as it was obviously damaged before I bought the car 3 months ago. They are looking in to it so just waiting now on how they propose to sort it.