Why did John make the call?

M: Hello, Mary. It’s John. I’ve got something to tell you about the delivery of computers
W: Oh, yeah. How’s it coming along?
M: Well, we have problems with the ABC Computer Company.
W: Really? What kind of problems?
M: They haven’t delivered the order on time.
W: Oh, no. Why not?
M: I don’t know. Would you call them?
W: Yes, of course. What’s the order number?
M: It’s CPU3861. Mr. Peterson is the contact man.
W: All right. I’ll call you back later in the afternoon.