If you are willing to root your device there are many ways to get all the coins you'll ever want. the best I've found so far is King root and root browser. You won't find a working kingroot in google play or any apps store but you can google it and download. It can be risky to your device and if when you start changing things in the wrong way, zynga will ban you from the game. I'm currently in the top 30 people... 27, or 28 I think... I'm just looking for a way to get to the blue diamond now. Good luck.