I have called a few times trying to check the balance on a cc, but just as epicmarket stated, security questions were asked to verify the identity. all depends on the bank where the card is issued from. every bank has different automated systems on how they give out information. It helped one time when i had to do a spoof call and make it look like the cc owners phone number calling that was on file with the bank , i just had to enter the full cc number and last 4 digits of social, and automated system told me remaining balance.