Beware of false Post Office reports regarding pets

I have lived at the same residence in Greenfield since 1999 with my family.  Only owned 2 dogs in that time, one who has now went over to the rainbow bridge.  Our current furry friend has just turned 6 and all she has ever known is our house and neighborhood.  I rescued Roxanne when she was just a puppy from a home that locked her in the bathroom all day and her meals consisted of McDonald's cheeseburgers.  My mother and grandmother were terrified of her breed becuase she looked "pit bull" and at the time with a the reports on the news about pit bulls attacking their owners scared them deeply.  I went through multiple courses of training her insuring everyone's safety would never be questioned.  Now 6 years later as I am about to move out of "the nest" my family will not let me take Roxy because they love so much. Recently we have had issues with not receiving mail to our home and also our neighbors home (we live in a townhouse/side by side).  It happened for 3 days straight beginning of June.  One day I watched the post women deliberately pass my house without delivering our mail.  Frustrated I called the Post Office to complain as it was going now going on Day 4 of no mail.  After talking with the rudest postal worker I have ever encountered I found out my house was marked with a orange paper stating "Caution, may bite" and I now have certain hours which my mail will be delivered.  After I talking with this rude postal women named Cindy I told her I would abide by their rules and keep my inner door shut between the hours they specified.  No big deal, which we have been doing the last few weeks.  Today after returning home from the nursing home which my mother is at after fracturing multiple vertebrae in her spine, which Roxanne comes with to visit the residents there.  I watch this post women drive past my house again, with no mail.  Mind you it is well before the time we agreed on to shut the door and the door was open because my neighbor was walking through it.  I went directly to the post office to complain yet again, we are not getting our mail even though we are abiding by the rules they laid out for us.  Jerry the supervisor was not helpful at all, he did however produce this orange piece of paper no one could find at our previous conversation that said Prior dog bite and will bite directly under it.  (picture is attached)  Jerry then said if a dog would bite that they would have to go through the protocol by contacting Animal Control, quarantining the pet, and a citation of up to $1000.  My dog has never bit anyone EVER in her life, yet this piece of paper is stating they are in knowledge of my dog biting someone.  After attempting and failing to collect this orange piece of paper with the the prior dog bite and will bite on their I took a picture to show to the officer at the police station.  After an hour at the police station and going through the events of why I was making the complaint, he looked through all of our files and found their has never been a police report of a dog bite at our neighbors or our house.  Apparently we have a ghost dog that comes around only to my residence when the postal women is around and biting her.  I am EXTREMELY offended by all the accusations the Post Office is saying about not only my dog but my care and responsibility as a dog owner.  Im not sure what this rant will even do to help my current situation, but it is all unfair.  To be unjust and discriminate over how one looks, acts, or presents oneself is disgusting and I'm appalled that a facility that works for/with the government such a the postal office would stoop so low to make false reports to not deliver our mail.