instant checkmate.com difficult to cancel las vegas Internet

i was in a hurry to get some information quicly so i joined instant checkmate for a quick result without doing any research. i knew the fee would recurr monthly. to be fair i got the details i wanted quickly. the problem is i was smart enough to go back and try to cancel and you cannot do it online ! but have to call a toll free number . this instantly sent alarm bells ringing lol. I live outside the US so i guess i would incurr charges. There is not even a contact for e mail on their site, but i eventually found one. so i have e mailed to cancel. just to make sure i will visit my bank here and get any further payments. i was lucky i saw a Ripoff Report when checking out this company when i realised something was not quite right.