The game bought a booster by itself when the phone was locked
in Support
Yesterday, I locked my phone (Lumia 920, Windows Phone 8.1) and when I came back, an alert appeared that I bought some kind of booster and I lost 18 gold bars!
I contacted King twice by mail, but I got an automatic reply twice which referred me to the forum. How should I contact King in order to get my gold bars back? Because I did not buy a booster 
regards,
Pim

Answers
Pim vD,
Forget EVER getting an answer or getting your bars back. King just wants you to BUY THEM.
If you want action from King you better hire a lawyer to sue them.
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0 · Helpful Woah! Sweet Love HahaHi Pim,
Sorry to hear you've had an issue with your items in Candy Crush Saga. Thanks for getting back to us with the requested details so we can solve this matter.
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0 · Helpful Woah! Sweet Love Haha