I am having a similar issue with Offerwire.
I ordered the ZyXEL router under the impression that it was also a cable modem. My fault for not checking it out completely.
So after getting the router, I realized it was only a router, of which I already have a wireless router.
So now that I don't need one, i find out if I return it I won't get a full refund. I have to pay for shipping, I have to pay a restocking fee, and then even if I do that, I don't even know if I will get the refund at all to tell you the truth.
And when I bought the router it said there is a rebate on it, but I can't find the correct rebate form anywhere on their website.
Offerwire is only around in order to make money off of idiots like me that make a mistake and order this non-sense from them. These routers are available on Ebay for 30 bucks. Offerwire will charge you $75. Don't do it. Buy the router and/or cable modems elsewhere.
I had to go directly to the Cox Office and spend another $75 for their Cable Modem.