Very Unprofessional. Very Rude. He is the Mang Kanor of online buy and sell - crafty and runs away fast when complaints are about to arise then act like he is the victim.
His item had a defect, the screen flickers and fades under certain specific conditions or colors to display. He had me test it but he had the theme, wallpaper, icons, and apps set up to avoid the required colors to make the issue surface.
He then avoids taking responsibility and uses verbal threats like an old man from the streets that lacks proper education.