One of my competitors is doing Negative SEO on one of my pages. I was competing with him for top positions on G. Couple of weeks ago he started to post comments on bogus websites using my entire article as a content. In this moment thousand of IP's are accessing the link for this product. The problem is that since he started doing this I've disappeared from SERP for the main keyword. I have used the disavow function for couple of hundred of links that I have found. I don't know what to do next .. My website is 3 years old and I have invested a lot of time and money in it. I don't want to lose it because of this motherf...r! I would appreciate if you have any ideas on how to stop this, I'm afraid that soon it might affect my entire website. Thanks.