Business did not issue me a 1099 even though I made over $600. How do I handle this on my taxes?

I work as a independent contractor to a business that told me they were not submitting 1099's.  I am not sure how to handle this on my taxes.  I am not sure how much I made and they are not being very helpful. I do not have their EIN either. I have lived in 2 states this past year and when I tried entering the info with out the EIN it took away from the wrong state.  Help.