just curious, what prevents you from getting an extra phone number and a phone just to go about your day to day needs? You need not share that number with anyone else? Heck, you can even switch it off, or silence it all the time.
I am a big believer in sticking it to these organizations that make these foolish assumptions. The burden of responsibility should be on them, since it is they who wants to get the money out of this transaction.
Whatever happened to MaskMe? You could create proxies for your phone number, email, adress and credit card
Cost. I mean an extra phone number isn't free. 40$ a month just to get around people asking for your phone number.