ac in 2010 vw jeta does not get cold ,put one can of freon in but still the same.its seems like ac unit itself isnt cycling on and off.

Two potential issues if you're not getting cold air. 1) You might have a leak that is barely detectable (an AC pressure tester should tell you if you can borrow one or have one handy). or 2) Possibly a bad compressor. With the car running and the AC off, turn on the AC to see if the compressor engages, this can be noticed with a slight drop in engine RPM that recovers quickly. If you don't hear (or feel) the compressor engaging then it could be the clutch on the compressor or the compressor itself. You could also have some else look at it while engaging the AC on and off. Lastly, make sure you're using the correct fluid which you probably already are but just saying. Good luck.

Thank you ! I'm a car repair place know , praying they won't over charge me . How much should it cost to get it repaired

Hello my 2010 jetta tdi the air conditining is cold when in idle but hot when running at high speed