Claiming passport and cancellation of partner visa from the sponsor

How to cancel a partner/investor visa knowing that the sponsor will never agree to cancel my visa, and the sponsor is ready to accuse me of stealing money in case I decided to leave the company?

I am a student and I never worked in the company. I was only added to the company to get a visa while I study. I am 22 years old.

The reason why I want to leave is that my passport was stolen by the manager/owner of the company and I have been trying to get my passport through the court but no use!

I want to cancel it and get a new passport and leave the country.