said by Maarvin 
:Had the person who made that claim taken a few minutes to check on the Vonage web site, he would have found that Vonage was temporarily having difficulty with their systems at that time. It was clearly, announced that changes to your account were not possible at that time and the engineers were presently working on the problem.
This complaint was made by someone who simply didn't have the sense to go to the source and read!
I don't follow your logic. Vonage has no provision to cancel service via their site - you need to call in. What sense does it make to go poking around Vonage's site if the person's intent is to cancel service?
