Here's a document which speaks of the payment and the problems Comcast was having:

http://ia600806.us.archive.org/25/items/gov.uscourts.dcd.152...

On February 2, 2012, AF Holdings served the Subpoena on Comcast. Fourteen days later, on February 16, 2012, Comcast objected to the Subpoena on four separate grounds: inadequate time for compliance, inadequate assurance of payment, improper joinder and lack of personal jurisdiction. After a good faith meet-and-confer conference on the same day, Comcast agreed to withdraw its objection regarding assurance of payment, but indicated it would stand on its remaining objections.

--- It's more recent, so they also raised other issues other than non-payment. The inadequate time issue is relating to staffing while joinder and lack of jurisdiction, I do commend comcast for fighting.