Why does the man make the phone call?

W: Hello, Discount Auto.
M: Yes, hello, this is Hector Fish. I’ m just calling to find out if the parts have arrived.
W: Ah, Mr. Fish. Urn... yes, well, let me have a look at the file.
M: You don’t need to look at the file. I wrote to you on the 16th of May and told you there was something wrong with the car I bought from your company, and you still haven’ t replied.
W: I’ m not sure if we’ ve received, um... ah, yes, here it is. Well, we’ re still waiting for the parts, and they should be here in, er... let me see now, er... yes, in three days. Well, we’ll let you know as soon as we get them, and we’ll arrange a time for you to bring the car to us.
M: I really don’ t see why I should have to bring it to you.
W: No, you’ re quite right, er. . . but we are still very busy, uh, we’ re just doing our best to get it sorted out. So, I’ll be in touch with you as soon as we get the parts. Is that all right, Mr. Fish, uh... Mr. Fish? Mr. Fish?