Haven’t been paid for a shift after 3 weeks at my first job—what should I do?

Hi, this is my first job and I’m still pretty new to working, so I’m not sure what the right steps are here.

A few weeks ago I worked an 8-hour shift. I clocked in when I arrived and clocked out when I left, so everything should’ve been recorded properly.

When payday came, I noticed I hadn’t been paid for that shift. I told my manager, and they told me to submit a payroll query, which I did.

The next week, I still hadn’t been paid. I followed up again, and my manager said they would email the payroll person.

Now it’s been 3 weeks total, and I still haven’t been paid for that shift. I asked again, and they said they’d email payroll again, but honestly it doesn’t feel like anything is actually happening.

At this point I’m not sure what I’m supposed to do next. Is this normal?

Any advice would be really appreciated.