I am working in a door manufacturing company. The employer has withheld my degree certificate. They did not inform me about the security procedures at the time of sending the offer letter to me. Upon joining, the HR department mentioned that I had to submit one of my original documents. Without any choice, I handed it over to them. Nowadays, the company is subjecting me to a lot of harassment. I really need my documents back or I will have to resign from the company. Kindly advise me on what I should do.