The case is a difficult one for you to deal with, I realize. A lot depends upon your presentation on Google.
I suspect that you may have some trouble with correcting the listing(s). This is what a Google Business listing can have changed about it:
and plainly what you would want to change about your listing and the way it looks on Google, is not among the things that can be so listed.
If some pages, that present an unfavorable opinion or viewpoint, come up first and at the top of the search results listing of pages found, that is oddly determined.
Specifically, top results in a Google search generally reflect both appositeness to the search keywords, but also the popularity of a click-through on the particular listing. In other words, if it is a page apposite to the keywords, and it is the one page that *everyone* clicks to view from the Google listing, it will rise to the top of the listings.
It is remotely possible that legal action of some sort might be necessary, to change the presentation of your company's name, in the listings.
I honestly do not know what can be done to change the listing in question. With apologies, having offered this much as my honest assessment, I have Opted Out, opening the case to other Experts in case another Expert might have more to offer in response to your question.