Someone did negative SEO to me

Someone did negative SEO to me and I am infuriated. (I am not in the SEO industry)

I found 2 SEO companies that are potential suspects and I intend to visit them and to find out if they do negative SEO

The question is that how can I remove the negative SEO quickly? The negative SEO are linking to the images on my website so can I just simply remove the images and will that work and help in my rankings?

What is the other ways that I can help minimise the impact?