Did you refill it with freon?

The A/C could be working just fine, but if there is No freon in the system, it will not turn on.

So, first off, charge the A/C system (the right way, not that autozone can shit) Put UV dye in the system to see if you have any leaks. Once you charge the system with freon and it still doesnt work, then you check the electrical.

-Ant.