There are a lot of services on the market. We opted for this agency, which I will not name to avoid their advertising. After noticing their undesirable actions (false comments, false members etc...) we took the necessary measures. And as you can see about the comments they are stopped.
Unless you have an NDA with them (you don't) you would actually do some good by mentioning the name of that agency.
Think about others like yourself that would start business with them and receive the same "undesirable actions".
The fake discussion octopus in not new here but would deserve to get some tentacles cut off for all the bad they have done. (pun intended) Good luck with yours

IMO refusal to disclose the name of that agency could also suggest close relationship with them or knowing from the start what this "undesirable action" means and implies, and still going for it.
Let's keep the forum clean as well... so who are they ?