Help Desk - Cancel GM Call option

I'm not entirely sure where to post this(general seems so cliche by now for suggestions, and I'm not a real big fan of posting ideas on a Friday night) but here seems best soooooo here goes. I'd like to see an option implemented in help desk for canceling calls to GMs. This would allow for their time to not be wasted needlessly on matters that correct themselves right after sending the call. I alone have come across the need for such an option twice in the past year alone and I very VERY rarely use the call feature. When I use it I have very good reasons to do so. And one of those times was just a hour ago. Anywho, I thought it was a good idea to bring up.

I can get us a live chicken to sacrifice if anyone thinks that will help, or I can grab a bucket of KFC.

I think there's policy for this. I remember reading. "What if you call a GM and you didn't mean to?" "When the GM responds, tell him/her the GM call was a mistake."

You can also send another GM call stating to ignore you the previous request.