Caller: Express Ai

I keep receiving calls from different numbers using a different name, they have an Indian accent. They all say they are calling from a company called Express Ai and that they are targeted at generating leads relating to real estate businesses. Whenever I google them, all the businesses by this name do not match the information provided. I have asked multiple times to be removed from their database. I get a call once a week from them, however the called me yesterday and again today. They know my name and they keep saying they are calling me back. I have never requested them to call me, and have no idea how they got my number.