Invalid Number

[Ring!]

Me: Hello?

Caller: Is this Twice?

Me: Yes. [Check Caller ID. It's my OB/GYN Office]

Caller: Hello Twice. This is Nellie at OB/GYN Office. We just got the payment you sent in. I need to verify the credit card number as I seem to be missing some of the numbers.

Me: O.K. But, let me call you back so I know who I'm giving the number to.

Caller: Oh, sure, I'm at extension XXXX

[Call OB/GYN office. Wait on hold five minutes. Explain I need to talk to billing. Wait to be transferred. Get disconnected. Call back. Etc. Eventually talk to Nellie.]

Me: Sorry it took a little while, the phones must be busy there.

Nellie: No problem.

Me: The number is 1234 5678 9101 1121

Nellie: That is the number I have here. It says it is invalid.

Me: What?

Nellie: I must be missing some numbers.

Me: Let's check them.

[Nellie reads them back to me]

Me: Yes, that is right.

Nellie: But that number comes back invalid.

Me: Is the expiration date wrong?

Nellie: No, I didn't even get that far, it just says invalid number when I entered it. So that is why I thought I must be missing some numbers.

Me: I don't know what to tell you, we've had this number for years. I do not have it wrong, and we used the card 20 minutes ago. Did you enter the type of card as Visa?

Nellie: No, we don't have to enter the type, the system figures it out and it just said invalid number when I entered it. And the number I tried before calling you is the same as the number you just gave me.

Me: Um...

Nellie: Well how about this. Would you like me to try to put it in again?