The meaning is that you are illegal in the U.S. A visa is just a paper to enter the country (i.e. cross the border), than, you need an additional paper which is called I-20. The I-20 is issued by the university you attend. Since you didn't attend the college you don't have the I-20, or even if you have, it was nullified and you were terminated from the system. To my knowledge, you have 2 months from the date of entrance to leave the U.S. or find another college.