Is there any magic phrase you can say to this person to get them to stop? I've leased 5 or 6 cars from the same dealership which is all around great except for

Is there any magic phrase you can say to this person to get them to stop? I've leased 5 or 6 cars from the same dealership which is all around great except for this one part. For example the green energy clipboard person trying to get you to switch power companies, you can tell them that you rent and there is no comeback.