MWNM,
When I failed my interview first time round I received a similar response and on contacting HR was simply informed 'We don't give feedback', After something bordering on harassment by myself I managed to find out which part of the interview (personnel, comptuter etc) I failed but that was it.
I would suggest that if you are going to receive any kind of detailed feedback then that is a vast improvement in the process, even if it takes a while
On a more positive note, there are plenty of people at the college who passed second time (including me). Also, if you're willing to put your 'career' on hold for 12 months and try again, that can only look good for you in the motivation stakes for next time.
Good luck