That in itself is only mildly annoying though. What really irks me is when you have to tell them no more than once. After that you start to feel harassed.
Example #1: A couple of weeks ago I was shopping with a friend at an outlet mall and she bought some stuff in a Banana Republic. I was standing with her at the register, and the clerk asked her if she wanted to sign up for a Banana Republic credit card. My friend politely declined, and then the clerk starts in with "are you sure? You can save 10% today." My friend declines again. The clerk says "Okay, but we never sell your personal information. Do you want to?" My friend declines AGAIN. She ended up having to say no to this woman FOUR TIMES. Frankly, I'm amazed at her patience. I would have lost my shit after the second time.
Example #2: Last week I went into Bath & Body Works to buy some more of my favorite bubble bath. I was in kind of a cranky mood, I just wanted to go in, buy it, and leave. The woman at the register had other plans. First she asks if I want to buy samples of some stuff they have in plain view up at the register. Like I said, I was feeling cranky, so in my head I'm thinking 'No, dumbass, if I wanted to buy them, they'd be on the counter right now. They're sitting right in front of my face, after all.' But I just say "No thanks, I'm good." She doesn't get the hint and continues to try to sell me more stuff. After we go three rounds, she finally rings up my bubble bath. And then I get the "enter your phone number on the touchscreen please." Right away I'm annoyed. First of all, they don't even tell you what for. And second of all, they don't ASK you if you want to, they TELL you to. So I tell her I don't want to. And now we go three more rounds. "It's the only way to get our coupons in the mail." I say I don't want their coupons. She says "We'll never sell your personal information." I say that's great, but I still don't want your coupons.
Just...when did companies decide that harassing their customers is good business practice? Every time I have an experience like this it makes me never want to go back in that store again.