yeah i set an alarm every minute full blast for 30 minutes and it barely works, either i turn them off in my sleep or just sleep thru them until the last moment i have a roommate but she works later in the night so we're never up at the same times. crying. i am convinced im becoming a rock LOL.
if this is an ongoing thing maybe you should consult a doctor or something...
it could be a medical issue beyond just not being able to wake up on time???