Does the BBBoC investigate blatantly corrupt/incompetent ref decisions?

[W1LL]

Or is there no punishment at all for referees like the one in today's Campbell Hatton fight?

There are absolutely zero consequences. The Campbell Hatton fight will be like #550 that this referee has given the fight to the loser. And he will be employed many times more in the future to do the same exact thing. Absolutely sickening.