What about a slightly alternative approach, where instead of trying to block the abuser, you try to make it clear to end users what the real website is? E.g. in your logo image, include the real domain name "saashub.com". Have some introduction text on your home page "Here at saashub.com, we compare SaaS products ...." When your images are hotlinked, replace them with text like "This is a fraudulent website, find us at saashub.com". Anything that can make it obvious to end users that they're on the wrong website when they visit the abuser's URL.
By the way, I've also reported the abuser as a phishing/fraud website through https://safebrowsing.google.com/safebrowsing/report_phish/?u...