WTF! Picture Lab - $0.99, but my receipt shows $2.99 was charged.

[Visual360]

What is going on here. I downloaded this app, and it's clearly shows that it's $0.99 right now. So now, all of a sudden I saw this charge of $2.99 and wonder what is was for. To my surprise it was for the Picture Lab.

Anyone knows the email/phone number to call in regards to this?

Thanks.