This is why I use a fake phone number when I'm forced to provide one, especially when ordering stuff off the internet. Good luck with your business, but I don't want to be in your database. It's quite annoying how every retail establishment tries to onboard you into their data harvesting scheme with their "points" and "rewards". No thanks, if I have to pay extra I'll do that. Phone numbers are terrible in particular because they are PII and can be used to link various data sources together to "enrich" them when selling that data to the brokers.
I do miss the days when you could just go through life not feeling like an NPC in someone's scheme to extract money from your pockets.
I use a burner number in Google Voice, but even that has issues. I've had some retailers reject the number because they're able to tell that it's not tied to a cell phone.
I do miss the days when you could just go through life not feeling like an NPC in someone's scheme to extract money from your pockets.