OK, Am reposting this as I can no longer reply to the original post as this web forum is screwy when your not allowed to answer a tech question as the reply buttons are grayed out. And yes, I verified my email.
My phone has been giving me the notification sound several times a day but when I look, there is no notification anywhere. I followed @GaryB82 advice and installed Notistar and Nice catch. Neither of which list the offender.