October 22, I pre-ordered call of duty modern warfare paid through from paypal.
downloaded the game in advance, when I arrived home I was hoping to play a game which was waiting for a very long time. when I decided to start the game I threw the message error you have to buy this game 
I need to activate the game with 16 code but no one sent me this code.
please help.
me today i am very upset
Hi Godless
If you pre-purchased the game through our store, then usually this is down to logging into the wrong Blizzard account. So the first thing I’d suggest doing is to just make sure you’re logged into the right one. If you still have the receipt e-mail, make sure the BattleTag listed is the same as what you see on Account Management
Purchases from other stores would need to be looked into by that store. If you still have trouble tracking it down, reach create a Ticket with any info you can provide - order number from the receipt e-mail, any other e-mails it might be on, etc. Do not provide payment info in the ticket