So they thinks its ok to treat me like this

dude indeed don't worry revenge is a test of patience but even better is the fact your still young and can in the work and time while saving money not paying rent (love you mom miss you a lot) a business is a whole bigger thing but a simple short term is college you could easily pay for full ride working at this and still have time for fun.
but if nothing else work hard and buy some flash like everyone else but this time collect what the others soo happily toss away