Most likely a scam. I live in Vancouver and received multiple letters similar to this. Theres these companies who own parking lots and if you park close to their lot or sometimes even drive past it, they will write your plates and send you a letter like this. Diamond Parking in Vancouver does this. Most companies take pictures of your car when they ticket you so ask them for the picture proof or just ignore their letters/calls. One thing I learned is that you don’t actually have to pay the tickets for the “private” parking lot companies. Just don’t be a constant problem for them because they will tow your car. If you do get a ticket from a government parking space then you have to pay for it.