Respect

There's been a lot of talk lately about foreigners not respecting Filipinos.
This goes both ways.
Today I went to a 7-Eleven to buy some drinks. The store had a few tables and about ten teenagers (they looked around 13 or 14).
A boy in my aisle said 'hey bro.' I'm 60, and Filipinos are supposed to have great respect for their elders. So I simply said, 'I'm not your bro, you can call me Mister or Sir.' He said nothing.
Then a girl I couldn't see yelled out 'Sir, buy me food' (these kids were all well dressed, not street kids), and I ignored her.
Then as I walked out of the aisle, one of the girls was standing there and said 'hi daddy.'
So I told her that's short for sugar daddy, and that I'm not her sugar daddy or anyone else's. Which meant she was calling herself a prostitute.
Everyone looked shocked.
Then I said, why do you think it's okay to say whatever you want to a stranger just because he's a foreigner?
And I followed up with, what would your parents think about what you're doing?
Of course, once they were called out, it was all silence.
I shook it off and enjoyed the rest of my day. Most of my interactions with Filipinos are positive, but it feels like a double standard is forming. The foreigner always has to be respectful, while for Filipinos it's optional.
I'm tired of this kind of behavior, which happens far too often.