Amazon's was especially bad because it allegedly had an appeal process that allowed submitting other forms of identity documents to bypass Experian's failure, but it never functioned correctly and attempting to verify my identity would fail because I had not yet verified my identity, and then the fact that I wouldn't verify my identity manually sent up a bigger red flag that permanently blacklisted me from the service with zero recourse now, even as I explained that I was unable to because their system wouldn't let me. Their customer support people would just say "I'm sorry, there's nothing I can do. You are not allowed to participate in this service anymore." I lost a lot of respect for Amazon at that point.