Is this retaliation?

This is the second time I've had an issue with my pay. The first time I waited until Friday when I knew something was off, hoping I was wrong, and I was hit with overdraft fees... because the HR person at my job typed the numbers in wrong. This time I was proactiv when the account that usually gets $100 of my check on Thursday didn't get it. I spoke with HR and they stated, "You don't get 'paid' until Friday" I went off told her, "I needed a better answer than that, because something was off" I have my car payment automatically come out of my account every payday, and if my money isn't there it's too late then. " The next day my boss and HR tried to blame it on our banks, as I called them on it. Because I already spoke to my bank, and knew that was a lie. They have now suspended me without pay, pending investigation, because they say it was "unprofessional" of me to say what I did. Is this retaliation? Do I have a case?