There's one day until the deadline and I gave them a week's notice but the college said they won't guarantee they'll submit it on time. I honestly think this is due to a teacher's personal prejudices as others had their references submitted in less than 1 day. Do I have any right to complain if it is sent late? How can I make sure I don't miss the deadline so I can avoid my application being marked as late? HELP!
You absolutely have a right to complain; personally I would take it up with the head of the college immediately and ensure that it's sent off.