Voicemail notification that won't go away

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http://androidforums.com – Soooo I flashed Decks Reloaded earlier today and I absolutely love it (probably be on it for awhile). The only problem is whenever I use an AOSP rom, I get a notification for 2 voicemails. But whenever I check my voicemail, it says that I don't have any messages. It didn't do this on sense roms, just AOSP. What do I do? (General)