Air con problems on VXR8

[big JK]

Noticed a week or two back that the aircon was staying off so booked the car in. They rang to say the system needed re-gassed so I asked them to go ahead. On collection I asked if there were any leaks found and was told that they had vacuum tested the system before re-gassing and it was ok.

Eevrything was fine and dandy on the way home but came out to the car next morning and aircon refused to work. The car is booked in again on the 29th so I'll wait and see what they find but just wondering if anyone else has had similar problems?