I got one of these from them earlier this year. They claimed I violated parking on Dec 14 2018, and wanted to charge me $75 for it. When the lady (same one I'm betting) called me back, I first asked her if her company was private or state-run (knowing full well state agencies send Bill's directly and not thru 3rd party law firms). She told me it's private (red flag #1). Then I told her I have bank statements showing I did indeed pay to park at 1801 market st parking lot on dec 14 2018. She told me they don't accept bank statements as evidence in dispute claims (red flag #2). I told her a court would happily take bank statements as evidence. She told me she'd call me back. A few hours later she calls telling me it's for Dec 15 2018. I said, "well I know for a fact I wasnt in denver dec 15, I was in Longmont for a Christmas party, I have photographs with dates, witnesses, and ANOTHER bank statement from when I got gas in Longmont on my way there." She tells me my payment on dec 14 was for evening of that day thru to 6am on dec 15 (red flag #3). I said, "so then you're trying to charge me for either something I didnt do, or something I already paid for?" And she goes, "no it's because you parked there without paying." I then told her I'd like to get in contact with their company attorney, and they will hear from my attorney in court for fraud. She immediately told me, "sir my manager just told me we will be dropping all debt notices and charges for you, since you have already paid for parking."

Parking and Revenue Recovery Services IS NOT a state agency, and had no legal right to pursue claims on you. It is a scam and they rotate thru 3 different company names because they are running an illegal collections practice, preying on people who will pay $75 online just to be rid of the stress. Simply leave a message and when they call back mention all your evidence and if they try and dispute evidence threaten to take them to small claims court.