My AC randomly stopped working

My ac worked great since i got the vehicle, then i noticed that only one vent was blowing cold air. the only vent that blew cold air was the one closest to the drivers side mirror. Then, a week later it stopped getting cold completely. Now when i turn it on i cant even hear the AC compressor kick on. WTF? A mechanic told me it was the blendor then another said it was the blower motor. then another told me that the compressor would still kick on if either of those were true. I am a college student i cannot afford to have a mechanic rip apart my dash.

 

If the compressor isn't kicking on then it's either seized up, or the low oil/freon safety is making it not come on.
Have it tested for leaks, if it leaks there's your problem.

 

Thanks, I took it off roading, nothing crazy. no big rocks or anything like that. nothing that i heard anyway. due to my stiff suspension setup i always worry it will knock something loose. it order for my rear suspension to travel there has to be 500-600 lbs in the back. So the truck gets knocked around pretty bad. hopefully i didnt break something loose.