How does cyrano continue to harass montfluery in Act III?

In Act III, Cyrano continues to harass Montfleury by throwing him off the stage during his performance. Cyrano deems Montfleury's acting skills unworthy and interrupts his performance, declaring that Montfleury is banned from the stage. This is part of Cyrano's ongoing feud with Montfleury throughout the play.