What can I do if I have not received my pay stubs in two months?

I recently started a new job as a janitor in California, the bay area. I started in late April and it is now end of June. I am having issues with my payment being processed on time along with receiving pay stubs. The company has been through two supervisors and two area managers. The company has also recently changed their name. I have asked for human resource number but was told that the company office is in Arizona. So the supervisor would send an email to the office for me. I have requested that they fix the problem on several occasions. I do not receive my check on paper, my company gave me a pre-paid card for money to be electronically transferred to my card.