I haven't put my real phone number into an online shopping checkout in close to 20 years. I've had problems exactly once, when an item sent was damaged in tran

I haven't put my real phone number into an online shopping checkout in close to 20 years. I've had problems exactly once, when an item sent was damaged in transit and returned to the mom-and-pop shop, and they couldn't get in touch with me. When I hadn't received the item two weeks after purchase, I called them and they happily sent a replacement.