Electric Meter Change Compulsory?

I have a person from a private company coming around my house and telling me that we have to change our electric meter and they do it every 7 years. He keeps coming back. Is there a rule that exists like this ? Should I call the cops next time he’s here ?

Edit: we rebuilt our house 4 years ago btw so I don’t see how it’s old and needs replacing. Maybe the contractor used the old meter?

by mixtrash