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I might be missing something here, but have you actually changed your domain name as well, or just the business name?
If the domain name is the same you should be able to edit Google places and put in all the detail you want.
If it’s a new domain it doesn’t matter, you’re starting from scratch anyway so far as Googles concerned.
On the phone thing, you may be able to do it with an app…I mentioned in another post “Twillio” as a possibility for a similar request…you’ll need to look in your phones app store and search Twillio, you’ll get quite a few apps that re package their service (phone numbers, SMS etc). as a stand alone app.