I used to get some credit card offer in the mail it seems like at least once a month. One time, I wrote a short note saying that I was tired of seeing their off

I used to get some credit card offer in the mail it seems like at least once a month. One time, I wrote a short note saying that I was tired of seeing their offer and would now never accept the card on principle and that their best bet was to stop sending them and hope I forget and put it in the prepaid return envelope and mailed it. They stopped. I forgot. I got the card some years later and only remembered it was that one after having the card for some time. I told them what to do, and it worked!