I have a lot of sites (all saas) and more and more people send me cease and desists and lawyer threats because they go to google, enter 'something' that's remot

I have a lot of sites (all saas) and more and more people send me cease and desists and lawyer threats because they go to google, enter 'something' that's remotely phonetically similar to a domain I run and then click on my site. They paid on some site that sounds a LITTLE bit (if you squint) like my domain and now they are scammed and want to sue me. Now I understand scammers do this as well, but I had actually someone turn up at our office (which is my business partner his home) with bank receipts with a really not so similar name, however if you type it in google we pop up first even though our businesses are not at all related.