You are wrong. They see many students who use admission to their college only as a means of entering the US because if the other school's admission was presented for a visa, the visa would not be granted.

You owe the money. If you remain in the US, they can sue you for payment and once it is on your credit report, you will have trouble getting a place to live, a car, credit - and even a job. Many employers require credit as well as criminal background checks. Your refusal to pay will likely kleep you from having the life you are looking for in the US.

If you do not want to attend the school, go home. Your best bet is to pay the bill, attend classes for a semester, and then transfer to the new school. Besides., what legitmate school is accepting new applicants so far into the semester?