If you're absolutely sure you wish to delete your account, please follow these steps:
1- Go to the in game Settings menu and tap the Support button.
2- Tap Delete Account button.
3- Follow the series of instructions that will guide you to delete your account and reset your game.
Please note that your game data will be permanently deleted once you follow this process and cannot be brought back.
You can always start a new game if you wish, after these steps.