Don't do business

U buy a product and they e never test it. Told if it dont work can bring it back and i told want cash back because it's too far to drive back. Said supplier wil decide now haven't even gotten a product they have mine and said they stil need to exchange it. Going 2 weeks without getting cash back nor product. They say wil sell my product i bought and give my cash back without knowing how long. U say to them u are bringing product back and they wasn't even at home when i got there