[He shouldn't be blaming teenagers here! He started it!

That's what Trish will believe until she's developed a little more nuanced and favorable familiarity towards Bruno's idiosyncrasies.

Eventually...

For now, she is immensely grumpy at him and he cannot change this.]

I am not!

[Oh boy.]

I can't imagine being surprised at something so small. Next time, I'll be sure to warn you in advance when I deign to do something as small as to hold a door open for you.

[Fucking shit. She hangs up on him here, also.

Bruno is probably used to teenagers doing this, too. The verbal equivalent of slamming a door shut behind them when they go to their room.]