Citation Processing Center, Newport Beach, CA They sent me a "Official Courtesy Notice Unpaid Parking Citation(s)" stating my vehicle parked at El Capitan in CA State Parks - Channel Coast without paying day use fee. Newport Beach California

Update: I wrote this report. I subsequently e-mailed California State Parks directly, explaining the situation, and sent both a written appeal to the collection agency (Citation Processing Center) and a letter to the Channel Coast District Office of the California State Parks asking to see a copy of the original citation, which citation I never received because I was never there.  

California State Parks Law Enforcement & Emergency Services responded right away, and told me that the vehicle license number had been entered incorrectly by the Citation Processing Center, which is what resulted in my getting notice and demand for money I did not owe. CA State Parks has removed the citation from being attached to my vehicle.

One day I will get a copy of the original citation, probably, and it will have the offending vehicle's license number on it, and it will not be my vehicle's license number. One day the collection agency will get back to me, probably with another notice and demand, and if I do get any more letters from Citation Processing Center asking for money, I will mark them REFUSED and put them right back in the mail.

Citation Processing Center was doing its job --poorly, but doing it. The difficulty lies in attempting to contact them, and by telephone I had no success. I got a robot which repeatedly disconnected me after whining about heavy call volume. The letter I sent was by Priority Mail, and there will be a record at the USPS of it having been delivered. My statements were of fact, and they were notarized. I have copies and print-outs of everything. I was right to contact CA State Parks directly.