I've been playing dishonored for like an hour, and I'm loving it. I have an issue, though. Whenever I buy any ammo from Piero Joplin (the inventor dude, who makes you the mask), my coins dissapear, but I don't get the ammo? I've tried it a couple times, like buying crossbow bolts but they don't appear in my inventory ammo? Am I doing something wrong or is this a bug?