account created without my consent

My account was created by a minor on my computer without my consent. Furthermore I was given no notice of the pending charge. Had I been given notice I would have cancelled this unauthorised charge. Furthermore I went through the history of this account and it appears it has never been used. I asked billing to "Please refund my money so I do not have to dispute the charge with my bank. Thank you kindly" If I don not get a response I will dispute the charge.