Help merging or getting an orphaned page removed that we have no access to?

I work at a bar and manage the facebook page, the bar went under new management in 2020, with that we lost access to the old business page because of a disgruntled manager. We can't access the page and we need to get it removed because its causing issues for our insurance. I have tried the meta help center and it won't let me fill out the recovery form. I am at my wits end. I have been trying to fix this for over 6 months and now its starting to cause real issues. I am lost and have no clue what to do. We've tried contacting the old owner and one of the old managers neither of them have access to it as the other manager was in charge of it, and we know she won't give it up. The pages have the same exact name, address, and phone number, which should work for a merge but it wont allow me. Please has anyone been successful with something like this?