It is very likely that some unscrupulous locksmith company has blocked the keyhole of your home, it may be that you have offended someone and they are retaliating against you, it may be that a child is naughty, and it may be that It's someone's prank.
Generally, if 119 comes and breaks it, your lock will no longer work. Take a closer look to see if it is a quality problem with the lock, or if someone did it deliberately. If you find it's man-made, you can call the police.