It's gotta be something simpler than that. Perhaps there's a database rollback and now they have mismatched ID somewhere. Or perhaps the caching scheme wasn't thought out thoroughly and the caches got delivered to the wrong person. There's literally a million ways things could go wrong, and hash collision is the last thing I'll suspect.
Yep that's exactly what I told them that its mostly a hash collision when I was not willing to pay the chargeback unless they can explain why somebody else's number was on my account. That's why it makes me angry after I paid the chargeback and can still see another person's info in my account, that I realize they have all the information themselves already and they know the issue, they just refuse to fix it and acknowledge it. It's strange that they can see the mismatch information in my account all alone, but they only care about recovering the $80 chargeback, while I have already made another $1000 purchase from Costco. I think it may be a better approach to escalade to costco.
