What is John Bird’s reason for calling?

Man: John Bird speaking.
Woman: This is Lucy Edwards. My secretary said you called.
Man: Yes, that’s right. Thanks for calling back. Look, the reason I called was we’re having installationproblems with the E 258．
Woman: Really? That surprises me. What sort of problems?
Man: Well, it’s a bit complicated. Could you send a technician round?
Woman: Of course, I’ll get one round this afternoon.
Man: That would be great.
Woman: OK, I’m sure we’ll sort it out in no time. Bye.
Man: Goodbye.