If you read the DCMA (Digital Millennium Copyright Act) in the fine, fine print at the bottom of the Eros page, say. You really only have leverage if you are the "copyright owner". Therefore, just reporting that someone is using a celebrity's picture has little effect, unless the celebrity (i.e. copyright owner) themselves complains.
I'm not a lawyer, but from what I understand, using a false picture in itself is not a problem as long as it doesn't violate a copyright. So for instance, TS-A could license her picture to TS-B to use in TS-B's ad, and no copyright is violated, even though its not TS-A who answers the door.
I spent a considerable amount of time taking directly to Eros management (based on the contacts you kindly provided me, Rachel), and sent them hundreds of blatantly false ads, but as far as I could tell, it had no effect.
The only positive effect I have had, is if I can identify the original owner (a model, or another provider) and send them the offending ad with a note, something like "Hey, do you know your pictures are being used like this?" That sometimes gets a response. Since they are the "copyright owners", they have the leverage to insist that the ad be taken down. I have had a number of emails back from owners thanking me for the info. Unfortunately, its a lot of work to id the actual owner, and then figure out how to contact them. In fact, it's usually impossible.
That's a lot of words, but in short, Eros and BP are not likely to take down an ad based on our complaints of content, e.g. fake pictures, unless we can get the actual picture's owner to complain. At least that's been my experience.
And if the pictures aren't copyrighted? e.g. smartphone pictures. In their defense, how could Eros or BP ever tell who's telling the truth about ownership? My conclusion is, due diligence, using this board and others, plus your own "detective work" is the only way to minimize your risk. Eros and BP aren't going to help.
Sorry for the mini-rant.
Cheers,
Miss Marple