Only Rodriguez knows for sure, given it's possible that Bong misheard him. That's part of the problem - Burnley and WBA fans accusing Bong of lying, calling him a disgrace etc on Twitter, despite there being absolutely no evidence to suggest Bong made it up.
What I can’t understand from these accusations of lying is why would he make it up? What did Bong have to gain from falsely accusing someone of saying something? He wasn’t trying to justify retaliation, the referee was hardly likely to take any action on Bong’s say so, and there was no history of animosity between the players or teams.
It is obvious to anyone with half a brain that Bong either heard or thought he heard those words and immediately reported it. Sadly the next person to hear such a thing will now be less likely to do so.