They are a new LinkedIn connection. I provide QuickBooks Consulting services and they are AO Tax and they would like me to outsource tax work to them or give them referrals. In this case, it's appropriate that they contacted me. They didn't leave any message, but they left a LinkedIn message about an hour after the call.
This is advantage one tax consulting asking if I need help with personal tax. I asked how they got my number, they said they looked at resumes on job boards and calling the numbers from there. Also the guy laughed when I said I do not appreciate marketing calls.