Please Advise!

I got a ticket for crossing a double line on the highway around west Covina area. I scheduled my ticket for an arraignment last week at 1.30PM. I joined the arraignment via court connect system. I waited for the judge to call my name but he didn't. At the end of the court session, I said that my name was never called. The judge spoke to someone and that person spoke to me sayin that there was an attorney attended at 8.30AM on my behalf and pleaded not guilty and case was scheduled for a trial. He gave me the trial date and said you can come on that date for trial if you don't know that attorney and he gave me the name of the attorney. I have no idea who that attorney was. What should I do in this case? Please advise. Thank you.