Shorting hours

I don't know from where to start. I do have a problem. I've been working for Amazon at my local FC and instead of paying me for 40 hours night shift, they paid me only for 30 hours. The manager told me the system didn't show him my 40 hours even though there are webcams around and people I worked with that night and even her manager talking to me... isn't that strange?

They are very stupid management but they found a way to steal my money or a way to not pay me. This is like back in history with slaves. Maybe they chose to do this to a foreign worker like me because no one will help. They also said my payslip was sent to me but I did not get any. I know I won't get my money at this point but I want this story to get out as this can happen to other people.

Is any chance my story will get to management in the US so no other workers will be in my position?

I was really surprised as I did not expect this famous company to mistreat its workers.