I was charged for something I didn't buy

Sorry to hear that.

Contact itunes support and tell them

I too got chargerd for something I didn't buy, thats a screen shot of one of the transactions. This is the second time it's happening to me

Have you checked your account's purchase history : See your purchase history in the iTunes Store on a Mac or PC - Apple Support ?

Or have you changed card or address details on your account : About payment card authorization holds in the iTunes Store - Apple Support ?

If it shows on your iTunes account, and neither you nor anybody who has access to your account and/or devices/computers did it, then change your password and contact iTunes Support : http://www.apple.com/support/itunes/ww