Absolutely do not listen to the other person do not film their actions that would make them not trust you at a young age.
One of the best ways to teach your sons to be polite is to lead by example. Model the behavior you want to see in them by being courteous and respectful to others. Additionally, you can talk to them about the importance of politeness and explain why it is important to be kind and considerate to others. You can also encourage them to practice good manners, such as saying please and thank you, and to be mindful of their words and actions.