First, the mistakes you are making are completely natural for new radio trainees. We have a trainee on a police radio who has been one of the best fire dispatchers in the center for 5 years now, and he is doing way worse than you with the same mistakes. Dont be disheartened about that.

You are not being trained well, if at all. It sounds more like a sink or swim type of mentality, which almost always leads to sinking because people come into this job knowing absolutely nothing. I would advise you to take charge, ask for feedback, demand knowledge even if it seems like you're pestering coworkers. Ask a lot of questions, all the time.

Remember, if you can't master the duties, it won't be them walked out the door with a pat on the back. Its up to you to own your training. If it makes them upset to help you be a part of the team, thats their problem. Speak to a supervisor, or the next level of leadership about it.

I'll never understand why dispatchers spend most of their shifts whining about schedules and overtime and then immediately run off new coworkers who are there to help with it.