2004 Taurus SES was told the a/c compressor is bad at a shop but they vacuumed the Freon out then recharged it with more Freon. I’ve been told by several people that it’s not possible to vacuum it down if the compressor is bad. Is this true? They are charging me $160 for what they did and quoted me $879 to change compressor which isn’t something I can come close to affording. I hate that I am not educated enough about this to know if I’m getting screwed or not.