Got call at 16:03 US Central time on 15 June 2013, but they didn't leave a message. I do have service from Comcast, but I don't know if the call was from them.
Unless the purpose of the call is to sell you goods or services, the Do Not Call list does not apply. This would appear to be a customer satisfaction survey for Comcast and is therefore exempt from the Do Not Call list unless at the end of the survey they attempt to upsell your current service. It is a sad fact that the majority of nuisance calls we receive are not covered by the law. Of course, scammers and scofflaws ignore the law anyway but at least we do not get calls from all the local businesses advertising their latest specials.