When you lock the door from the inside it will mean that no one can get into your room without a key. When you pull down the handle it unlocks the door, which can give the impression that you have not locked it from the inside.
If the handle gets stuck when you have locked the room from the inside don't panic. Slap down the handle with a bit of force - this should free the lock and is should work after this.
If you have any problems please contact the halls team on 01326 253503 or log an enquiry by selecting the 'log enquiry' button above.