Conning people

I've rented my 2 townhouses with Trio Properties Klerksdorp for a couple of years now, however changed rental agencies due to lack of service, now here is my concern because I know that what they are doing is wrong, however how many people have they conned: 1. Firstly both houses were painted out 3 to 4 years ago, the one house is still immaculate, the other one's wall has shoe marks and scuff marks,etc, yet they are claiming it's normal wear and tear and they are not fixing it. 2. After taking the water reading for all of the years, I now have to take the water reading myself for exiting tenants for the body corporate. 3. The shower is leaking in one of the units, they are no help in that instance either. 4. The one bedroom door is locked in one of the units, they refuse to fix that as well. Like I said, I know this is wrong, but what about the other people they have mistreated this way and doesn't know that it is wrong?