Hi Chief,

Thanks for contacting us and playing Clash of Clans!

I am sorry to hear that some of your gems are missing. Gems are always used to perform an action in the game that contributes to the value of your village, like buying resources or speeding up construction and training.

The progress you made with the gems is there to stay, but I have credited XXX gems to your account to compensate for this incident. Please note that this is a one-time exception. To prevent any further accidents, please remember to keep your mobile device and game safe from other users, and apply a screen-lock if you Clash while on the move.

If you have any further questions, please don’t hesitate to get back to me. 

Clash on!