But I understand it's frustrating to be charged for nothing. But you have to understand it looks funny.
Feedbacks are there for this kind of things. Not forums. Otherwise if you post it on forums you have to be ready for no-life people like me laughing at your situation
Where they told you to. Either send a Feedback message or email support (support@athinkingape.com) and they'll assist you.
K. But to us it looks like you are complaining to try to get free credits. The devs have a record if you received them or not. If you did receive them and emailed them complaining on not getting them, you could be in big trouble.