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If you can't fill the oil, you should add pencil powder and insert it several times. If that doesn't work, it's best to change the lock.
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Is it the key? You can inject some oil and lubricate it.
Adjust the position little by little, you can only try a little bit, if you still can't get it open, the last thing is to find a lock company, they will be very professional and quite clever will be you. >>>More
With the development of science and technology, many people are equipped with anti-theft doors at home, but they will also encounter various problems when using them, so what should I do if I can't take out the anti-theft door key? >>>More
This should be stuck by marbles or key teeth, you can try to put the key outside and inside the top point, really can't top the hand to get a screwdriver to knock it, and then rotate the key is no problem, after the key is pulled out, then use the pencil end or graphite powder to get more points on the lock cylinder and the key, back and forth insert and pull the key is very good to open, which is caused by poor lubrication.
Is the door open or not? If it's open, just buy a lock and replace it, if it's not open, call the door to unlock it.
No. Please a professional lockpicking company. There will be a way.