Yeah, I fell for this piece of *** too. I should have known what was to come from a company who has no phone number or physical address.
If you want to return one of these pieces of said ***, go to their site and click on the Return box icon. Type in the info, but NOT your credit card number, and then why you're returning it and press Submit. The page will come up with a printable Return Information page with their PO box (STILL no physical address, but now I understand why not).
I suggest getting insurance, certified and/or delivery conformation before returning it. Also call your credit card company and tell them not to honor any billing from these morons. If it's been over a month since you bought it, see if your credit card company would be interested in taking back the charge and deny these idiots the funds. Citing fraud should help you along with that.
Product or Service Mentioned: Magicjack Phone Service.