Who called from 2678284211

We receives calls from this number all the time claiming we've set up a meeting and they need to confirm but they are liars. We've caught them in the lie and they still do not take us off their calling list.
SMS appears as the caller on our Caller ID.

These people have called 3 times in one day. I am not sure how they got my name

Will not tell you what is about .  Will only speak to owner

Caller ID says SMS.  Won't say who they are or what they want.  Wants to only speak to the owner of the company.  Very Rude.