I hate to be the one to break it to you but if you've already provided a contact method for a salesperson you can tell them "no I never want to be offered this

I hate to be the one to break it to you but if you've already provided a contact method for a salesperson you can tell them "no I never want to be offered this again" directly to their face, and what they actually hear is "maybe later". Because maybe you won't change your mind but as a general rule people do change their mind and a high percentage of sales is being there at the right time with the offer.