1 star is way too generous of a rating. I've had coins taken from me even when I won 3 games in a row(3000 coins). There was even one time where I leveled up and wasn't given the 20,000 coins that I earned. Too many glitches in this game so I uninstalled it. It doesn't help to contact game support or the developer. I tried that and they don't respond back. Obviously they don't care about ratings or they would fix the glitches. Your best bet is to keep on searching for a better pool game.