Am returning mine as well but I did the entire return online with no need to call customer service. I clicked on the Your Account link and then Your Orders and then selected the order which then gave me the option to return it via UPS which is trivial to do at a local staples or UPS store.
Oh well, unlike the Tramontina buy that I posted about which was pretty good but not too good to be true, things that seem to good to be true, usually are :-).