Emails from Block sender's list still arrive in my Inbox

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Hi,

I am having the same problem.  I have blocked many, many times the same senders (approximately six or seven consistent and constant offenders) and yet there they are -- still appearing in  my inbox.  They are NOT in my safe senders list.  How does this happen? Or should I just forget you guys and move to someone else as this is a real waste of my time.