I inquired about a website that popped-up while I was reading my e-mail. Checked the whole thing out but did not submit the form and now I have two charges on my bank statement. What can be done about this?

on april 2 2008 i cancelled this product by phone and received
a confirmation number. then today 5/8/08 i checked my
bank account i saw that, they deducted a payment for this
product that i had cancelled for this product that does'nt even work. WTF... I WAS THINKING!!! So i want them to reimburse
me for what i had already cancelled 30 days ago.
MY ADVICE TO ANYONE IS DON'T ORDER THIS SHIT! IT'S
A WASTE AND A SCAM.