Does anyone know how or why my husband and I can't listen to voicemails? We have the IPhone 4 and our phones will indicate there is a voicemail but when we go to listen to it, the phone can't retrieve it, there's no message to be played, but we both clearly know we've left one for the other person. And on top of not being able to listen to the message, we can't get rid of the indicator light that goes with new voice mail. 
