[woudsma]

I've never had public profile information. Only visible for friends (and my phone number wasn't even visible there). How would my private phone number get into that dataset? That would suggest that they have more than just public data.

[nuclear_eclipse]

Your friends can (and almost certainly will) share their contact info (including your name/phone/email) with Facebook , Messenger, or Whatsapp, even if your account is deleted and doesn't exist.