Xfinity Service Cable Card UnPair/Re-Pair

  Hi,

  I understand that cable card support is limited.  I tried the website to re-pair one of my cablecards, but it fails every time I've tried.  Calls into service were met with the equivalent of a blank stare, and eventually a response of "we don't support that anymore", even though my cablecards remain on my account.  I'd appreciate some help getting to someone who knows how to re-pair a card.  I have all the relevant information to do so. 

Thanks.