Deceitful models

As much as i have done a lot of shoots with lovely & trustworthy models,there are some running around that are just very deceitful & very vindictive.
I myself have encountered 2 models in recent times that after a 'Home Studio' shoot (my home) decided to get greedy/demanding for either more pictures than agreed or asking for more than the agreed rates.
In both incidents they were unsuccessful in their attempts but what they did do is thrash my name to portray me as a dodgy photographer.
The fact that they both know of each other & are in regular contact,it was very easy for them to conspire together...hence why i removed myself from Purpleport.
Unfortunately,mud sticks....my argument is that rather than thrash someones name in this way,why not report your accusations to the police & let them follow it up with pleasure,surely if there were any substance to the accusations the end result would involve your actions as well.
Needless to say there are some photographers that fall into this category but it's all too easy for the finger to be pointed at someone for whatever reason.
For my own safety,i installed CCTV in my home 5 years ago & any footage of any shoot can be presented as evidence & rubbish away any  misleading accusations of any kind.