1. Avoid it
When you encounter an unreasonable old lady, the most conservative way is not to argue with her. You can't quarrel with her. Most of the time she is quarreling with you because of what she wants to achieve. As long as the loss is not too big, just leave it to them and have some peace of mind.
2. Preserve evidence
When quarreling with an elderly person who likes to fight, try to choose the place where the quarrel occurs, where there are many people or where there is surveillance. You can prove your innocence if there is any dispute.
When an old man who likes to curse is arguing, try to stay as far away from her as possible and let her curse as loudly as possible. When she gets tired of scolding, she will be honest.
3. When dealing with an old person who doesn’t talk to you, you must not be forceful. Even if you are very reasonable, it still won’t work. Control your emotions and remember that impulse is the devil and cannot be resolved through legal procedures.