I got an email about my ticket this morning and it told me:
In order to better protect your account, all Billing, Subscription and Account Security issues are dealt with via our Customer Service telephone support.
You can contact our Customer Service team using a mobile phone, landline or VoIP (such as Skype, Viber, Google Voice etc.).
Why? This is stupid, just look at the amount of coins I should have, see if its the same as I had, and then give me the difference.