Wayfair, Joss & Main, Birch Lane, Dwell Studio, and All+ Modern are all part of the same family of companies. I also received a call from them; purchased a sofa from Wayfair and they were verifying whether I was an individual or a business. They're legitimate and not spam.
It's one of the following companies: Wayfair, Joss & Main, Birch Lane, Dwell Studio, or All+ Modern, all of which are part of the same family of companies. If you purchased anything from one of those companies, they will likely call to verify if you are a residential or a business customer. They're legit.
Wayfair - I bought a small gift for a client and when checking out was asked question "is this a business gift?" so I answered yes. BIG MISTAKE - I now get several calls per day trying to set me up with a business account, PLUS emails and texts for the same thing. I have called back the person who is leaving messages (she left name, phone # and extension) and requested that they stop contacting me, I am not interested but they keep calling. I will never purchase anything from Wayfair again.