there are fruadulant charges on my debit card that i did not authorize

as with the complaint i just read posted by Simone on 4/16/09, there was a charge on my internet bank statement. when i called the # 888-205-2664 i also got billing services. she told me they handle billing for hundreds of online merchants and wanted the last 8 digits of my credit card in order to identify the charge. when i refused she asked for the routing # of my account --when i wouldn't give her that she asked for my last name & could not "bring that up". as with simone the person also said they handle "adult site" billing. i then searched the MUHPOP.com & got that billingservices website. so then i googled MUHPOP and ended up here due to the. the only way to get rid of the charges seems to be giving all that identifying info. i will call my bnk tomorrow & hopefully they will remove it but i would love to really find out what this is about.