Dollar Tree

I was at your Dollar Tree store, 6206 Wilmington Pike, Washington Township, OH 45459 on 5/06/21 and checked out at 15:51 p.m. I was standing in a line of about 12 people. To accommodate shopping customers, the line had wound itself around in front of the other cash registers so that it appeared there were probably only two or three customers waiting in line. After awhile and about 6 more customers behind me, I moved to the back of the clerk, spoke very kindly to her about the number (probably 15 or so by now) and simply asked if she could call for another clerk to help her. Others in the area heard me. She immediately became angry saying I could apply to work in the store to become part of the solution instead of "the problem." I slinked away back to my place in line instead of replying, and she kept on angrily commenting. But, then I heard other customers nearer the register begin to say that I was only asking kindly and should not have been spoken to in that way. It progressed to her shouting and telling customers to "shut up" causing them to leave their baskets to escape the store. Others left further down the line as well. I remained in the line hoping to apologize for upsetting her, however when I checked out she would not look at me. She did not have her name tag on, but later I saw it on my sales receipt. It says the person is Cindy and that she is the assistant manager.
Today, I called hoping to talk to the manager rather than advising you, the corporate office. When I called I asked for the manager. When the person answered, I asked if this was the manager speaking because I recognized the voice from the day before. She answered, "Yes, this is Cindy, and I am the manager. I kindly said, Thank You, and hung up.
I have shopped probably every two weeks in Dollar Tree Stores for 20 years all over the U.S. I have NEVER seen behavior like this. I will not shop in this Dollar Tree again until this woman is removed from the staff there.