I had a similar experience when attempting to buy AVG software and license. I downloaded what I "thought" was a 3-year license for about $58 charged to my credit card. The charge was approved by MBContact.com, I received confirmation email and link to continue the transaction and download the software.
I clicked on the link and found username and password to continue to the "Member's Area" where I was able to download the software. I downloaded the software and it automatically started a complete scan of my computer (which I stopped after about 3 minutes). The program was called "Security Solutions" in my list of Program Files and system tray. Alarm bells went off in my head.
I have AVG on another computer, and this just wasn't feeling right (and the price for a 3 year license was too good to be true). After snooping around more on the "Security Solutions" site, I noted there was absolutely no contact information, the link to the "support" tab did not function, and the site was virtually barren.
I emailed MBContact (no response yet - and I'm not expecting one) to NOT charge my credit card. I will also contact my VISA provider and dispute the charge. I also deleted the software as fast as I could!! If a loss of $58 is the worst thing that happens, I'll be happy. I am more concerned about the fact that MBContact has my credit card information and "Security Solutions" got at least a partial "scan" of my computer.
I have since downloaded the "real" AVG software. Watch out for sites that have similar email addresses. In this case the "copycat" address is www.avg-download-free.org/. I know that I'll be MUCH more careful in the future.