That is a really odd response from the BP and I can't imagine why they wouldn't go on his show. Unless they are prohibited from going on ANY shows. But then they need to have a PR office who DOES go on television and radio shows to defend their policies. Not that I think they are defensible.
Exactly what Tony says usually does happen. Usually a govt spokesperson or an office handles the press and gives them, if not interviews, press statements etc.
When Tony brought his guest coordinator staff person on, you could tell by the tone of her voice that the request for information, interview, or the time of day was being flatly rejected.
Tony made quite a lot of it during the rest of his show saying that apparently the higher ups in the BP were encouraging the officers to have a siesta, have a smoke, take a potty break, grab a beer....anything but do their job and arrest people at a higher number than what was done when the Minutemen were present.