Sorry to hear you guys are having trouble. Sinjid is one of the games that the purchases are completed through our payment processors so we can help look into what has happened. Can you please contact us here - http://armorgames.com/purchase-support.
Since we'll need to talk about your transaction ids, and payment details this is something we should discuss one-on-one and not in an open setting like the forums. Please also make sure you have the correct transaction IDs to avoid delays in being able to locate the payments.
We'll work with you to get to the bottom of if this was a double purchase and also why it may not be working.