This concept is a fact of life out in the real world. To be consistent, it should be a fact of life in your home as well.
If your children grow up and act rudely toward the employers who supply them with jobs, they will be strongly chastised or fired (left without jobs supplied).
If your children grow up to be rude to the neighbors who supply them with loaned tools, the tool supply will be shut off.
Logic says, "If you are rude to the producers, production will stop." Then stop producing if your kids are rude to you!
Don't set your kids up to fail later in the adult world by allowing them to succeed while being rude. Don't be bullied. Return to reason and trust your common sense.
But you don't have to get defensive. If your teenager has been abusive to you, you can quietly and courteously say...
If you are rude to the suppliers, you shouldn't expect new supplies. You have been rude to me,