Immature Team

[Gaiteka]

Hi Guys,

2-man FIBA domestic/rec league competition in Australia. High Grade mens game last night, Team A is leading by about 20 with 5 minutes remaining in the game.
Player from Team B is at the line for his second shot, tries to catch team A off-guard by throwing the ball at the ring instantly and going to get the rebound, although in his rush he steps over the line before the ball makes contact with the ring, I was ready, I caught it and called the violation.
He turns and clearly disagrees with the call and says that i only called it because i was surprised by what he did.
He then proceeds to call a timeout for Team B clearly in protest of the call. Clock stops and teams go to their bench, as we return from the timeout they call a second one (their final one) immediately in a clearly unsportsmanlike manner. Team A is annoyed but respectful, and their captain politely asks if there is anything we as the referees can do.
So that leads me to my question, can I, as the referee, decline a request for a timeout? Further, can I take any additional action against this, i.e. a technical foul on the bench?
My partner and I did not know so we simply made sure a minute had passed and called them straight back in. Thankfully, Team A was very relaxed about the issue, unlike what some other teams would have been like in the same situation.

Just celebrated my first full year of reffing, so I am asking you more experienced officials how you would have handled these situations? I am hoping to progress to high levels of refereeing and I think game management is my biggest area to work on.

Cheers