Cancelling mw2 pre-order?

How do I do this? I created a ticket saying I didn’t get some vault items but I dunno seems like it should be easier. I got some stuff going on now and I’m gonna need the cash. =\

Have you tried asking for a refund ?

https://us.battle.net/support/en/help/product/services/334/1997/solution

Click Continue to start the process.