What is causing no cool air from my a/c and caused my battery to drain?

What is your question?

I took my car in on Monday for a normal oil change and had them check the a/c for the noise I was hearing (it's an older car so it's normal noise for its year), the driver rear strut and my brakes. The battery and a/c were fine before I took it in. Wednesday morning I get the car back and I don't notice the a/c not blowing cool or cold air, so I bring it back into the shop to have them look at it. They want me to come in tomorrow on Thursday so I had to work with no a/c in my car. Then suddenly I attempt to start my car at work and it's dead. I have no idea why because it's a good battery. I'm able to jump start it so I drive back to the car shop and leave it there so it won't die at home and I won't need to pay for a towing. Is there a possibility there was something accidentally messed up that might've caused these issues?

How long has your 2009 Honda Civic had this problem?

One Day