So your employer pays for accommodation and meals?
A lot of people who have parents that could help, don't receive anything extra as the school of thought is, you have to learn to cut your coat according to your cloth. In extreme situations parents might step in, but I wouldn't feel like you're hard done to because your Father won't give you pocket money in adulthood.
If you were to retrain you'd get student loans and bursaries, but if you are able bodied, it's expected that you will get a part time job for extra money.
It's not looking at your situation and then looking next door, who hypothetically have major holidays abroad, weekend breaks, nice flash car. They wear designer clothes, go to the salon every week to have hair treatments, beauty treatments. Thinking I want that, I can't have that, so I'm going to have to rob a bank.
Work honestly sounds awful if I'm honest, you're applying for jobs, getting no where. Your life outside of work is what you make of it though. That's important to remember. Also I'd consider noting down grievances and contacting ACAS to make sure everything is right and above board.
You sound very angry at life, angry at your job, angry at your Dad for not helping. You need to work out a plan to make it better. Whether that be college in the evenings, volunteering to get experience when you're not working. You've got to figure out how to sort this out by yourself.
Life is never what you dream it to be, it's what you make it.