I feel your pain! I was able to get an extension on my offer from Carleton, but when I emailed my other top choice they said I might not know until the beginning of April, and I have to give Carleton an answer by the 31st
I can just pay a $300 deposit and accept my Carleton offer and then withdraw if my other school finally lets me know, but I'd hate to eat that $300
edited to say: Also my other school is my alma mater and that application was due 2 weeks before Carleton's, and I got it in a week early. So I've been waiting even longer, and I'm getting anxious and whiiiiny.