Regarding Visa complications

Hey guys ,

I need your suggestions on this. I am from India.

My H1B visa was filed by company A,who told they will deploy me if I get H1B visa . Please note that I never worked for this company. I got the visa, but I had waited for almost two years, they didn't arrange for my travel. My visa got stamped last year and now it's going to expire soon. My present company is ready for H1B transfer and send me for short term assignment.

I am worried that my visa will be blocked by company A.

What should I do?