At Comcast, you are not just an undervalued customer – you are also an indenture servant, and you will answer any question they have if you try to leave them. Ryan Block, former editor-in-chief of AOL’s Engadget before he co-founded the community site GDGT, posted online his recorded voice call with Comcast trying to explain to them they wanted to cancel. Comcast though decided that going Overly Attached Girlfriend was a good idea. After the jump here is 8 minutes of a 20 minute phone call tug of war with Block trying to cancel Comcast with a rep who just can’t take the hint, he just isn’t that in to them.