Poor Customer Service - Angie The Choice

What do you considered as Good Customer Service?

I had made a call this morning at 10am to the Sun Plaza outlet (Angie The Choice) to make some enquiry.

I understand perfectly that it is better to make reservation to the particular outlet that I wanted to collect. My first priority is at Sun Plaza but the staff replied me saying that currently they don't have any Yam cake available at the store. She also mentioned that I could leave my contact number and she can helped to see whether will there be any stock coming in by this coming Wednesday (which is tomorrow.)

So I requested for her to help me check for other outlet to see whether they have any stock available so I can give them a call and make arrangement. The staff did not even let me complete my sentence and interrupted saying that it would be better for me to contact other outlet myself if I want to collect from the outlet. This is
because it is very troublesome and difficult for them to liaise between the customer and the other outlet. (Do the company encourage the staff to reply the customer in this way? So they can simply just reject my order if it's troublesome? They don't even care what is the customers' needs?)

I know it will be troublesome if I want them to help me liaise but I am only requesting to check since they are checking whether will they have any stock coming in. And I am not requesting for them to place order for me. Is it so difficult? Do you considered this as Customer Service? I doubt it very much.

The staff had been shouting at me when I started to ask for other outlet which piss me off! She sounded very impatient too as if she is rushing for something. I mean, if she was busy, she could at least mentioned it to me and I can always call back later on. I believed she did not have to use this kind of attitude towards me. Coz I don owe her anything loh!! Her attitude towards me was damn so rude which I got mad and shouted back at her. It was an unpleasant experience for me to make enquiry to Angie The Choice.

I just wondered does that mean Angie The Choice is separated by different outlets ? They actually don't belong to one company? I'm confused. Do they even liaise with each other? Or they just simply hack care?