How?

A Conversation (could it be call that?) that I have to endure today:

Me: Hello, *** :).
Woman: Hello, Puan J please.
Me: Sorry she is with a customer at the moment. Any messages?
Woman: I would like to speak with Puan J please.
Me: She is with a customer now, I'll ask her to call you back, is that ok?
Woman: No I'll be going out soon, and I don't want to be disturb at the hospital. I want to ask her about my shipment from Japan, I want to know how it is now.
Me: Mmmm shipment from Japan, do you have the awb number? Maybe I...
Woman: (cuts off) No I want to speak with J just for a while, call her let me talk with her
Me: But she is with a customer right now....
Woman:(cuts me off) Well I'm a customer too
Me: Yes but...
Woman: Nevermind la. (hangs up)

I'm a customer too....my foot.