I recommend Chase or Amex, I have had good success getting through and speaking with them about various issues. I'm not sure about not having the card number.

I recommend Chase or Amex, I have had good success getting through and speaking with them about various issues. I'm not sure about not having the card number. One thing you can try is the 'lost or stolen card' number rather than the general request line. They will get you taken care of most usually. Also, it's likely they already mailed your new card, so your card was indeed lost, only by them. I think this happened to me once.