I have 5x level 70's that I boxed. I must have been reported at LEAST 100 times. I've never heard from a GM.
I've had sooo many people tell me they've reported me it's nuts. I've had people who saw me in BG (who I no doubt embarrassed) actually come to my server, roll alliance and then tell me that they are reporting me. lol.
Not one tell from a GM ever.