KXII and FXII, the local CBS and FOX affiliates found on Channels 12 and 20, announced Monday that pay-TV provider Dish Network will no longer carry programming from those channels as of 6 p.m. today.

“We are shocked and disappointed to learn that Dish Network has decided to impose yet another blackout on its customers by taking away our stations, which broadcast some of the most highly rated programming on any broadcast or cable channel in our market,” Rick Dean, the station’s vice-president and general manager, said in a news release.

He said Dish has refused after many months to even begin negotiating carriage terms that are consistent with those that Dish has provided to other broadcasters and cable channels.

Dish Network did not immediately return a call seeking a comment about this situation Monday afternoon.

Dean said Dish was offered an extension that would have continued beyond the deadline, but Dish refused to accept it. He said no one can make Dish Network accept the offer so the blackout is not likely to end soon.

He said the blackout will not affect customers of DirecTV, Cable One, Vyve Broadband, Suddenlink and other local providers.