UPDATE:

The A/C system is definitely not working properly.  I took the car back to the mechanic and told him that his work was not done properly.  The A/C was not working only after one month.  He said that he would not have tried to recharge the system if there were a leak.  So, I asked him then why did my bill show a charge for refridgerant, dye, oil and an enviornmental fee?  I also explained to him that I know how a system is recharged and that the dye is used to show any leaks in the A/C lines.  I told him if there were leaks before you recharged the lines and you went ahead and recharged them anyway without fixing the leaks, that is not how the repair is supposed to be done.  He repeated himself and I told him to go out and sit in the car and feel the air coming out of the vents, because I had just come off the highway and purposely turned the A/C on just to show him it wasn't working.

By this time, he was getting annoyed and he said if there is a leak in the lines, you'll have to bring it back in.  So I said to him, if there are leaks in the lines, it should have been detected the first time you recharged it and I am not paying you again to recharge the system.  He turned and walked away and went back out to the car he was working on in the shop, and I went back out to my car outside and left.

I just finished filing an online complaint with the Better Business Bureau and told them that I did not expect a refund, although it would be nice so that I can take the car to a more reputable shop and have it repaired again.  I knew that in the past, this person had a reputation for ripping certain people off, I guess I thought that he had changed.  The only other reason I took the car to him is he specializes in gas tank replacement, and that was the reason I took the car in in the first place.

Thanks for the help and for listening,
Sharky