That's a pretty gutsy approach for a hack scientist. You piss off the guy just when you're also forcing the guy to scramble for new sources, many of which might actually tell him the truth.
The trick is, you don't actually cut him off completely. You just take your time returning his calls, and are less energetic in digging up material for him to use in his articles, until you sense that the reporter is once again your "prison b**ch".
The dirty little secret of reporting is how many of them are abysmally ignorant, and depend on their "sources" to practically write their articles for them.
My daughter worked as a news intern. Much of what happens is copy/pasting of "news releases" from the sources.