AC just wont keep cool

[carguy24]

Took 96 in to get recharged, all was good for about 2-3 weeks. Took it back in, and something was tightened, freon added, all good for about a week. Back in, and $85 for a hose to be replaced. All good for a few days. Back in, and finally told the evaporator had a leak. Got that replaced (at no charge-because he felt bad that this has been ongoing problem). Did he feel bad, or did he not fix? Cuz AC ran cold for a few hours only. So if recharging, tightening, and replacing Hose, and Evaporator do not solve the problem. What other troubleshooting would there be? Any suggestions? (other than dump the mechanic)

[sirsmiley]

bad compressor? freon a/c's are garbage now cuz in canada anyways you cannot purchase freon...i would have thought youd have a cfc free model and not freon...