McDonald's review: Managing staff

My husband went through drive thru on 4/1/24. He paid with a 100 dollar bill which one of the old bills from before. As soon as lady took it she said it was fake and she could not accept. She ran through no machine nor used any type of marker to check if it really was fake or not. My husband handed her another 100 bill but it was a new one and she took it without problem. He asked for the other bill she refused to give. He waited in parking lot until I got there and we went in I asked the manager if she could shoe me the bill was fake. She replied with the machine was too heavy to bring to counter I then asked for her to use the fake bill marker and she replied that the marker did not work. I asked then how she knew it was fake she said just look at it. I asked her name she would not provide but she had a manager white shirt on. The crew was laughing and making smart remarks and one even took out her cell phone to record while laughing. The manager herself kept laughing as I kept asking for her to show that the bill was fake. She did not give any receipt for the bill and would not give contact info. As walking out of resturaunt the crew started laughing loud and saying things to which manager allowed for them to do. This is very unprofessional and who is she to decide if a bill is fake just because it was old if she didnt have any way to show it. I will post everywhere possible about this manager and the service received as well as the disrespect shown until this is resolved. This lady should not be manager at all heck she couldn't even speak english good thing I speak spanish. This is ridiculous that people get treated this way