That's a great example of how Amazon abuses their monopoly power as a marketplace provider to boost their vendor business. "Calling you" is something that they

That's a great example of how Amazon abuses their monopoly power as a marketplace provider to boost their vendor business. "Calling you" is something that they do for their benefit, but go to great lengths to prevent 3rd party vendors from doing, by blocking vendors from getting access to your phone number and not providing a formal opt-in if you want to share it.