Circle K complaint: Rudeness unprofessional

On June 22 at 930 am I was going to make a purchase and I handed the clerk a 20 bill for the purchase and she looked at it and she tore it and then she put on a piece of scotch tape and then she looked at the bill and then she took it the assistant manager and she said that it was fake and I told her it wasn’t but she insisted it was and I told it’s a little faded because f the sun and I found it in the job site I was working at, then she went to the manager and she said the samething that it was fake, I again explained it and then she said she was going to call the police and that she has me and my coworker on camera and audio and then all three females started laughing at us and the manager then proceeded to tear the $20 in front of us, I want this situation to be investigated for their unprofessional services, and in return I would like my money back with an apology. Thank you