alexxu

Hi! I am a student who receive the admission and TA letter from George Mason University. The TA offer letter is " If you have any questions, please contact the Director of the PhD program, Prof. Sanjeev Setia at csphd@gmu.edu. Please indicate your acceptance of this appointment by sending an email message to csphd@gmu.edu as soon as possible. " So I sent an email to csphd@gmu.edu to ask about the deadline of making my decision. But today I receive an letter which wrote "on your acceptance to the PhD program of the George Mason University Computer Science department " But I don't accept the offer. So what should I Do?