SmashBurger review: I was never paid for my time working here

I worked here for a little over a month in October and I was never payed at all. I have gone in multiple times and they look around and say they cant find my check and then say they will email payroll and to contact them again in 2 weeks. It has been 6 mounts and I have come in so many times. I went in about 4 weeks ago and I thought it was finally solved and I talked to David Calecutt and he said call him in 2 weeks like always if i didn't get my check mailed to me and I called him and he didn't call me back or answer. I really would like to get this figured out ASAP. It has been so long since I worked there and I know it wasn't long but I still deserve to be payed. I would like it if SOMEONE would get back to me and tell me what to do. I have my w2 to show the hours I worked for proof. Thank you. I would like it if I got my money I earned very soon. Thank you.