gia,

Unfortunately for whatever reason there are people who are unhappy/rude/angry that you have to deal with.

I have no advice but I can offer suggestions.

1) Kill her with kindness. Greet her with a smile, eye contact and a warm hello/good morning/afternoon.  You most likely not get anything in return.  Consistency and persistence is key.

2) If you are willing to put yourself out even more then engage in conversation with her.  Ask her about herself, likes/dislikes, family, etc.  Establish a relationship. She will find it hard to be rude to someone she knows on a more personal level.

3) Be aggressive back. Be rude back. Demand the plan or anything you are entitled to.  Don’t ask for it.  Demand it loudly and forcefully.  Call her out on those microagressions.  Tell her that what she says/does is unacceptable especially from someone whose job is to be of service to people like you.

Not sure what is the best way or the most effective for they are two opposite ends of the behavior spectrum.

Good luck,
Mark