Cancel what Catty? The account as I said is a pass to use the other Google subscription tools
I think a note to the Gmail Forum is in order NOTE:
That account is neded to post there too these days 
.Has stopped a lot of spammers when it was called Usenet and then Google groups
A Very good decision in my opinion...Still a lot of traffic but not much topic vandalism by idiots. The archived pages from pre google account days make hard reading

BTW I know of people that have several accounts(for Gmail) ...Why?

Is it for Pose value? Or a form of cybersquatting?

I have 3 AOL names yet I only use 1 (my primary screen name) and one in reserve the 3rd is storage for "favorites"
Bottom line if you cannot get a stop or cancel then risk getting a "new" account if it allows that (let us know?)
And swap your Gmail login on the other programs.. Then the transition will go smoothly
and Catty here is a list of all My current Google programs which I need this Pass for
Base - My items
Google Mail - Settings
Groups - Manage subscriptions
Notebook
Page Creator - Settings
Personalized Homepage - Add content
Picasa Web Albums
Search History
Talk
So to quit is not a good thing

Click this link to see yours
https://www.google.com/accounts/ManageAccountEdit OH and to close it altogetiher amd start over ...Just discovered it.Use this link
https://www.google.com/accounts/EditServices 