by the way here is what the college (test venue) said i should do -
Test Center Complaints
If you have a complaint about a test center, please send a communication to ETS. In your communication, provide a detailed description of the complaint, including the name and address of the test center, and the test date. The communication should be received at ETS no later than seven days
after your test date. Allow four to six weeks for a response. If you communicate your complaint only to the test center staff, you will not receive a response from ETS.
GRE Test Administration Services
Mail Stop 34-Q
Princeton, NJ 08541 USA