4pbilling.com charged my credit card for services I didn't authorize or want-nor am I interested in ... not even sure how they got my information to begine with ?? Internet

was unknowingly charged twice on my card -on the same day- for a internet service I have /did not subscribe to; nor was ever aware of, prior to checking my balnce/ history on my card.by a company I have never heard of , nor ever used in the past!. would like to have charges reversed/cancelled or removed  from my account.And re credited the amount/s lost /taken from me !. I am not certain of / or have any prior knowledge of my card # / or personal info  being given to the 'accused 'company by me - or anyone else(dirrectly or indirrectly)?. please email me with any further info you may have /or assistance given , thank you