The Gator 1 Central FAQ (http://www.bsd.ufl.edu/G1C/gator1/FAQ.asp) says this:
2. I am graduating/transferring/withdrawing from UF. How do I go about getting a refund from my accounts?
If you are graduating, transferring to another school or withdrawing
from UF, you are able to obtain a refund for any of these three
accounts. In order to do this, you must visit the Gator 1 Central
office located in the UF Welcome Center, where you will be able to fill
out a refund request form. Your refund check should be issued soon
after.
Here is the location and hours:
ID Card Services
UF Bookstore & Welcome Center, Room G071
PO Box 112115
Gainesville, FL 32611-2115
352-392-UFID (8343)
Hours
Starting May 6, the new hours for the ID Card Office:
Monday - Friday: 8AM - 7PM and Saturday: 11AM - 4PM