These formus are provided by Apple but are "staffed" by other users much like yourself.
That means that other users "answer" any questions posted.
There is nothing in your post that seems to relate to iChat (where the Post has ended up)
There is nothing to say where you were buying (or not buying) the game from.
There is nothing to say if it is for an iPad, iPhone or other iOS device or for a Mac.
They have charge me for the game price...
Who are "they" ?
This also seems to be 10 days later than the event happened.
iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.4)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously