I have a 2006 audi a3 a/c ot working. It has the correct amount of freon in it.

If you are 100% you have the right amount of freon then the next step is to check your pressures. If the pressures are equal and the compressor is turning on then you may have a bad compressor. You can rent gauges at the parts store but you need to know how to use them. If you don't work on your own car then use this link to find a good shop near you. https://repairpal.com/repair-shops Alex