my new ipod classic keeps freezing

I got it for christmas and have been looking after it. The screen and buttons consistantly freezes at least once a week. I don't know what triggers it besides that it only happens when I'm doing something with it. So it dosn't happen when it's in my pocket. The screen dosn't shut off or dim. When I plug it into itunes my computer registers that a usb device was plugged in with a sound effect but itunes dosn't communicate with it. The only way I found to fix it is to wait until the battery drains and then charge it again. It's a classic 160 gig. I don't know why it would be broken because I've never dropped it or bumped it and because it's only a month old it's very dissapointing.