The Aircon in my 2012 facelift is not working. Sent it in to Bosch, they filled in gas and the Aircon worked fine (icey cold). After a week, it stopped working completely, not even a little bit cool.

Any common issues that could cause this?

 

You probably have a leak somewhere. Unfortunately they can be tricky to diagnose. You can get a die to inject and see if you can spot the leak or else you may have to take it somewhere that can do this for you