The guy is a smug asshole. A smug asshole does not listen to the
customer. He believes he knows better.
He may be more logical, but his beliefs are getting in the way
of any logic he may possess.
Humility is a crucial factor in logic - [1]Seedy Johnson ? - if
you're smug, you've lost before you begin.
Self-confidence is one thing. You need self-confidence.
But "I already know more" before you even hear what the other
person knows? That's arrogance and it's bad for business, any
business.
References
Visible links
1.
https://www.facebook.com/seedyjohnson?hc_location=ufi