[icallfouls]

In regard to the flopping that happened so frequently by the same player.

Someone suggested a warning. Try that, it is useful.
Consider calling a blocking foul. Then call it again. The player will soon be departing.

I agree that a T is certainly an option, but at the highest levels this is not called. So I would say that is a bit extreme.

Lastly, review the rule book and casebook in greater detail. Misapplication of the rules is on you. I have reason to suspect that you knew you messed up and tried to explain it to your rules interpreter so as to minimize your culpability.

Officials get better when they recognize the errors they make and eliminate them from their game. Hit the Rule Book and these types of errors will become a thing of the past. You have basically wasted your first 6 years by not knowing the rules better. Your future is in your hands.