[wolverine876]

'why don't you go work from a public wifi spot' is not a constructive or polite complaint. Just say, 'if you would pass along a customer complaint, here is what I'd like it to say: I need more reliable service to work from home; I may have to look for alternatives. I find it very frustrating. Thanks for sending that on for me.'

The human being at the other end of the phone is not your therapist or the object of your frustrations. It's the same with waitstaff. They have their own problems; they aren't their to be kicked when you are frustrated.