Dollar Tree review: store manager

While I was in dollar tree shopping I heard the store manager talking loud and negative to an employee. When the employee came out she was crying heavy tears, it really bothered me. I also heard her talking very, very negative about other workers in the store. I could hear every last word she was saying and I was by the glassware. She is very unprofessional. Something should be done about this. That's the worst store manager I've ever encountered.