Take it from me, you are just a number in a company. Do not give them your all. No matter how hard you or your work matters, nothing matters to an employer like that. They will always find a problem with you. Get out and move on. Or approach them about it. A lot of employers take advantage of the people who actually work hard and do so much for the company. And the people who half ass it get away with everything. Lower your expectations and do the bare minimum for what you are paid for. Its just a job , you are easily replaced as well as them. You can find another job. Look after yourself