I think that Comcast is a USA only service so have no idea of what people watch or listen to on Comcast. But above all, why do they need a consultant to do the switch? There is more to it than a credit card and a subscription?
I forget the other details, but remember to never do business with Comcast or their subsidiaries / partners.
(Sorry; off-topic, but I needed to rant)
https://arstechnica.com/information-technology/2014/07/call-...
Last time I had to cancel a Comcast subscription it took half a day of phone calls, and then I still had to hand-deliver the modem to a pretty dodgy service centre the wrong side of Dorchester