I apologize that you experienced this during your training server ATC session, however if you would like a more professional ATC session, why not consider joining the IFATC Expert server ATC.
You can apply here, if your interested:
If you are interested in applying but do not meet the requirements and wish to practice this is a good option for you, pilots and members of the IFATC Team will see this and will come to help you. If you wish to take this route I recommend only opening parallel runway airports with very little to no traffic.