Log the complaint
When to use: Use it as your opening reply the moment a customer reports a specific problem.
When to use
customer name has reported a concrete problem, like a late delivery or a faulty item.
Script
Thanks for letting us know, customer name. So I have this exactly right, let me read it back: complaint summary. Have I understood that correctly?
I am logging this as a case right now so it is on record and does not get lost -- your reference is reference number. Anything you add from here attaches to the same case.
This is not just a chat that disappears when we close the window. It is a tracked complaint, and next action is what I am doing with it next.
Give me a moment to get the details down properly. I would rather capture this once, in full, than have you repeat it later to someone else.