No one's asking you to?
If you want to take them down one ticket at a time then by all means have at it, if they're unable to enforce their demands then you'd have to assume it's because they're being cheeky sods in the first place.
At the same time, it doesn't mean that I think it's right...
Just for balance, it's not just you.
There are a large number of dodgy companies out there who do make it harder to find out what rules you should be following (how long to park, what fines are, where the restricted parking is etc.) and they should be challenged, no argument.
That said, here...