Not similar, but related, once I made the mistake of paying with "pay with amazon" on a website, I foolishly thought that amazon would hide most of my details,

Not similar, but related, once I made the mistake of paying with "pay with amazon" on a website, I foolishly thought that amazon would hide most of my details, instead of it they immediately shared my email with this website, without even asking me to confirm it, since I use a proper email with my amazon account, I was mad.