How to remove illegal advertising of the organization on a third-party site?

Question

Internet advertising

Good day ladies and gentlemen!
Recently, our organization (LLC) found on the Internet on several sites illegal, incorrect information about allegedly our vacancies.
As it turned out, this is a job search system and a job search portal in Russia.
On these resources themselves, we did not find any contacts other than e-mail addresses, i.e. this is not an individual entrepreneur or LLC, it is not at all clear who and why is doing this.
We wrote to them, one portal responded, but stated that this was not the case, and the second did not answer at all.
Please tell me where we can apply to remove these ads from these sites?

Answer 1

write to the hoster, it is better if the lawyer/lawyer immediately