is it normal for a mother to gossip behind your back?

i go to college in Waco Texas, my job is in San Antonio Texas, it would require roughly a 4 hour drive and i don't have the money for that, he wont answer my phone calls either. Plus my mother works for the same company and she has more trust with them due to the fact she's been there for 10 years, the only way to explain myself is to meet with him and give him my side of the story, and that isn't possible at the moment. Also i was damn good worker, i did what ever he told me to do and i did it right. The only time i can work is on breaks from college, and that money was needed for school.