The Salvation Army USA complaint: Bully Manager

am writing to complain about a manager at the Salvation Army on Ming Ave. In Bakersfield. California
Last Saturday I was shopping there with my son. I asked an employee if he could use a dressing room to try on jeans. She explained that they were closed. From where I was standing it looked like there was a purse on the ground of one of the changing rooms so I told her I thought someone was in there and I was confused. She was confused also and said maybe someone got the key but as far as she knew the dressing rooms are closed. I was frustrated but that was it. We decided to buy fewer items because we weren’t sure if they would fit and we got in line.
Then this woman, who never even identified herself as working there approached me while I’m standing in line to pay and said do you have a problem? and she said it with such a bad attitude it was obvious that she was the one who wanted to make her point. She was so rude and unprofessional the whole time. I told her no but she was adamant to engage. She said the changing rooms are closed until we get the word from corporate. I said ok but that’s strange because I was in there a few weeks ago (whether they had been left open by mistake I don’t know?) To which she called me a liar.
She had no business approaching me in the first place. I decided not to purchase the clothes because she made me really mad and I left the line, but my son really wanted the jacket so he stayed to pay and I waited at the front door. While waiting, the manager came towards the front door as if leaving for a break? I told her that the way she approached me was unnecessary and very rude to which she argued and was rude some more. I told her if she is a manager she needs some training! And she told me to leave and don’t come back.
I am the least confrontational person so why this woman came at me this day I really don’t know, but I am telling you that she needs training. Her behavior was horrible and unprofessional and completely unwarranted!
I’m sure everyone who complains probably says this but I really never have taken the time to complain or write in about anyone, ever!