This is an easy fix, try some WD-40. If the door knob (apt., bedroom, bathroom door, etc) is loose grab your trusty tool kit, pick up the screw driver and tighten. Remember: righty-tighty; lefty-loosy. If your door keeps jamming, call us! We DO NOT repair deadbolts. The tenants are responsible for any issues with a deadbolt, as well as, providing us with a key in case of an emergency.