A little more detail would be nice. Are you able to use /w or /tell? If you cannot talk at all, you might have been muted or something like it.
Hmmm... It's obvious you have been silenced/muted, but don't worry you'll be un muted in a couple of minutes.
Use the correct report form here: Your ingame name: The offender's ingame name: A description of what rule they broke/how they broke it: Evidence/screenshots.