I can't clear a text notification. While I was reading a text, another came through - an SMS update from Facebook. When I look in my text messages, it's not there. When I click on the notification, it takes me to create a new text message. When I clear the notification, the next time I got a text, that one pops back up. Then it keeps flashing the notification that I have a message.... how do i clear this stuck message out of notifications?