You need better employees and better products.
Bluetooth earbuds bought last week failed to pair after initial set up and sound quality very poor. When I told salesman who sold me the product of these problems, he asked how I would know quality was poor if set wouldn't pair, then said that he remembered I didn't want to pay very much. Store will exchange for another set of the very limited selection they carried but refused to give store credit. I donated the defective product back to them rather than prolong business dealings with them.