Told I couldn’t be hired at Wendy’s after already applying in person

I’m 17 (turning 18 later this year). I had talked to someone yesterday where I applied and was told to come back today at 9am. When I got there, I told them I had an interview at 9 (I didn’t so idk why I was told to come back at 9). She (different person) informed me that she wasn’t aware of any interviews at 9 and was going to have me come back after 4. After stating that, she had asked how old I am, in which I told her and she said she doesn’t hire anyone under 18. Keep in mind, The lady I was talking to yesterday never told me this information and simply handed me the application (which I filled out and it had my date of birth). Additionally, When I went in, The lady couldn’t even find my application.

This was more like a rant because I was annoyed.