
Ignoring them like you have been doing is the best way to get on their nerves. Also smiling or being extra nice to them makes them nervous :) Also getting them to repeat what they said like 3 or 4 times (I’m sorry, I couldn’t hear you, what was that?) can get them to lose their confidence. Whatever you do don’t start a fight because they’re looking for one, and make your reactions boring so they’ll lose interest.