Let the sponsor of Jericho know its gone and with it CBS's audience. Remember these people are in this as a business. We need to enlist their help, not anger them.

Thank them for supporting the show this past year and express your sincere regret that Jericho is gone and with it the viewing audience for the network.

If there is no option on the "In reference to..." field that seems to fit - pick something like "Company Related..." or "Other..."

Remember at all times to be polite and courteous to the sponsors of Jericho.