Symbols

You know you have a horrible social life when someone leaves a message on your cell mailbox that you have not set up and don't know how to listen to. This then leaves a little symbol at the to right corner of my cell screen forever since I don't know how to get rid of it because to get rid of it you need to listen to the message. And now I'm mad at that person for calling me! Stupid symbol is making my phone screen horrible!