If ya kept a pad of paper and pen with you and wrote everything down you might not have a problem with more than one transmission <G>. Works for me when flying GA stuff. But that said, if pilots would ENSURE that they are talking with someone when they try to check on and knew the LAST frequency maybe not talking to someone wouldn't become so much of an issue. Just because you are flying enroute doesn't mean that you shouldn't listen just as hard as when you are in the terminal area. It is BUSY up there too and if we have to turn you for traffic we sometimes need to turn you NOW and not on the fourth of fifth call...
regards
Scott