Hanging on the telephone?

We noticed the above photo in the Londonist Flickr stream this morning. It was taken by windscreenfly who notes:

it seems banksy has a pet stalker or very dedicated fan; these and other paste-ups were dotted along the clerkenwell road, all seemingly pleading for banksy to call. the person had even left their mobile number as well. so just in case you are reading banksy, it's 07984 404664...go on, it's good to talk! ;) - london ec1

So there you go. If you know Banksy you can now pass the number on or if you hate Banksy you can ring this mystery person up and give them a piece of your mind like some deranged old codger on Points of View.