Goodwill Industries review: Cash transaction

I shopped at the goodwill in Hilliard Ohio and my total sale was 11.03. She asked me if I wanted to round up. I said no, not today. (I shop often and usually DO round up). I gave her $12 in cash. She then reached into a tin on the counter and took out .3 to use so I wouldn't get .97 back in change. The phone rang, she answered it and proceeded to put my $12 in her cash drawer. I told her she owed me a dollar back but she refused saying I only gave her $11. Then she totally ignored me as she talked on the phone. I'm sure her drawer was $1 over but she probably put it in her own pocket. It's not about the $1 but she is not ethical. This was on 5-15-20 at approximately 9:45-10am or so. $11.03 cash transaction. Hilliard Ohio. I also tried to call corporate and got the run around from a male switchboard operator. He made comments "we just reopened and I thought everything was done by card". He refused to transfer my call to an administrator. Very frustrating. I also tried calling again and left a message in the HR line but no one called me back.