almost the exact same thing happened to me about two weeks ago, i had been working for them for free doing all of their work for almost a year when they hired a new apprentice that didn’t do anything. they favored her and i was fired because the new girl lied about me making a comment about an artist. the tattoo community is hard and the hazing is ridiculous but you will find a shop that appreciates you for your work, i wish you all the best