If you're told to bring your Samsung device here because it's on warranty, don't bother. They will find some excuse not to honour it.
A clue (besides dozens of similar reviews on Google and yellow pages) is the sign prominently displayed on their counter stating that physical or verbal abuse will not be tolerated. That's more akin to something you'd find at the tax office at city hall or a car impound office.
Don't waste your time going all the way out to this place.