Vonage Deceptive cancellation fees, don't support serive Holmdel North Carolina

I had Vonage for over 3 years. During that time, they offered an "all in one" wireless router, which I purchased, rather than having multiple devices.
After about 2 years, Vonage told me the router was "stuck in an endless loop" and I'd have to buy another. I almost cancelled at that point, but went out and bouhgt another one. Several months later, tehy told me that there was nothing they could do, as they had basically given up on trying to support wireless routers. They said that since it was within the 1 year warranty period, they would replace it for no charge, with a wired unit and I would have to go buy another wireless router and plug this unit into it. Now, I have deceide to cancel altogther and they want to charge me the disconnection fee and rebate recovery fee because they replaced my modem. I bought 2 devices that they had stopped supporting and they want me to pay even more. They even told me that they were having all kinds of problems with the wireless routers.

Ken
Wake Forest, North Carolina
U.S.A.