-Haven't received a negative
-he knows how to message and he knows i respond to messages.
-he opened a dispute because he didn't receive his package yesterday.
-he did not message about the mail running late.
Maybe i'm overreacting to his overreaction?
I'm not a big seller so maybe I'm not familiar with current ettiquette.
https://tools.usps.com/go/TrackConfi...%2C&tABt=false