Sorry, but...
I know this is not helpful, but...do you actually enjoy the job? It doesnt sound that great, and it sounds like the people who run it are unprofessional and treat their staff poorly. If you dont enjoy it, then trying to fight the company and get them to make changes might simply...
A friend of mine in Georgia worked at an accountants and did some tax returns for free for some friends. She later resigned and now the boss is withholding her final paycheck ($500) and asking for $1200 to cover the time/paperwork involved in these 3 small tax returns. This amount seems way...