|Sorry to hear that.|
If you haven't bought the new modem yet, I suggest you try hooking things up yourself once more.
Before you do, click on my name above and read my "how-to" guide titled, "Add a second Router to your LAN"
It gives detailed instructions on how to daisychain a second router to another.
If you can't get it to work with that guide helping you, then order the modem.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.