They are scammers, I went to charge my air condition and they kept me waiting for two and half hours then told me that the I need to replace my A.C. system and gave me a question of $2100 and they charged me $100 to tell me this lies.
I went to autozone and charged the A.C. with $48 freon can and its working perfect since then.
The only reason I left this store and went somewhere else is that they tried to do exactly the same with every one walked in during my long waiting time.
I lost $100 for those thieves and I really feel sorry for their victims.