I will never order any food from @wingstop due to their dumb ass commercial with a doorbell in it that causes my dog to bark frantically every time. Literally adds nothing to your commercial besides to have dog owners everywhere hate you.
Listen people, ghosting sales professionals is not the answer.
Sales professionals can take a "No" much better than not hearing from you and not knowing why.
If a salesperson invests time in getting on the phone, putting together a proposal, etc., the least you can do is let them know you're not interested.
Pretending like they don't exist anymore is worse than giving a simple, concise, and clear, "Thank you but we decided to go in a different direction."
Then, if they don't respect the no, that's when you set clear boundaries and let them know the decision is no longer up for discussion.