I agree, Pinch. This practice has been going on for years. The TPA issues the ticket - the ONLY ticket that one has to pay [ETA: Impark is the only other ticket issuer that you must pay and the ONLY private company with this privilege in the City of Toronto, and probably in the province].
There were scams going on not too long ago where private tow companies were issuing tickets that looked identical to the TPA tickets in order to receive payment. The City of Toronto made the public aware of this scam, and made them aware of the fact that their licences would only be affected if they did not pay legitimate TPA parking tickets.
Also, if your car was towed off of private property (this law might be changed now) in the city of Toronto without the authorization of TPA(Toronto Police Service Parking Authority), the impound lot had no right to refuse you your vehicle. This happened to me, I freaked out at the impound lot, called the cops, and the tow company impound lot employees were ordered by Toronto Police to release my vehicle. They wanted over $300.00 for ticket fee (for no ticket, imagine that) and towing fees and impound fees. I didn't have $300.00 on me, nor in my bank account (these were the days before Debit machines at every vendor's cash point).
See, they were towing on behalf of a private company on private property. There were no tickets issued by TPA to my car, nor any towing orders issued by the TPA. There were no legally required signs quoting by-law numbers, no "No Parking" signs, no "Tow Zone" signs - zip, zilch, nada. These particular vultures (the tow truck drivers) were, I and my friend both remember, idling on the far side of this HUGE lot that we parked in. I remember looking around for "No Parking" signs, but saw none and thus parked. They were WAITING for people such as us to park, and I'm willing to bet that they towed my car as soon as my friend and I were inside. Creeps.
Therefore, ultimately, the property owner was on the hook (pun not intended!) to pay for all towing costs associated with the removal of the vehicle(s). They tried to get me to sign a release paper to try to take me to small claims court, but I told them to shove it, I was not required to, nor would I sign anything. Also, it was not worth it for them (the property owner) to take this to court, and in truth, only a small number of people were aware of this law so they took the loss. In fact, because they removed my car and caused damage to the front bumper (minor), I could've theoretically counter-sued. The police told them that it was considered theft if they did not release my car, and so they did. I was only 23 at the time, and I was so mad I was screaming at the top of my lungs as they continually refused to release my car. There were no "No Parking" signs where my car was towed from. I was absolutely rabid! When I left, the morons at the impound lot went on the PA to say goodbye to me (being sarcastic) and right in front of the police officers, I gave them the middle finger salute.
I have NEVER in my life been that angry before. Not before, and not since. I was so angry that it was embarassing, but it was 3am, we had to take a ride from complete strangers to downtown Toronto from North York, and I had my friend (who just had a baby 6 weeks prior) with me to drive home. Man, I was absolutely a crazy person, and I do not regret one minute of it because I got my car back within 2 hours with the help of the police with no fees, and they never came after me in court. Because of me, everyone behind me whose cars were towed from the same lot had their cars released without payment. Two years later, on "Michael Coren Live" I saw City Counsellors discussing this exact topic, and informing the viewers to call police - just as I had done. I had to get uncontrollably angry to get it done, but sometimes that is what it takes. I surprised my friends with my anger, turned off some people with my anger, but in the end I was not scammed by these jerkoffs.
To the OP, do your research as this may still be law (I don't live in T.O. anymore) and if it is, stick it to them.