sevis did not trasnfered a weekago. how do i get a new i-20

Chicargo art institude did not transfer my I-20 to the new school. After I told them I want to join public university. Initially I did not think that i get accepted to LSU. But I did at the last min. new university gave me the acceptance letter. what are my options?
My F1 is valid for 5 years. I just do not want to go and come back, because it cost me lot of money.