If this is the first they've heard of it, they will deny and ignore.Obviously they will not admit or accept any liability now but it might trigger an internal evaluation of the quality of the people they employ.
If they've already had complaints over the years then if they were ever going to do anything they would have done it already.
IMO the chances of this report about something allegedly done 8 years ago triggering a "we keep hearing of problems, I suppose we should look into it to see who is to blame" reaction are non existent.