I had to cancel Cox Internet a few years ago because I was moving to a different state. When I called to cancel they asked why and I declined to say. Why should I provide them with another data point for their executives to see in a report? It's enough that I want to cancel the service. They don't need to know anything else.
Yet they just kept asking, refusing to take "no answer" as my answer. I had to get almost belligerent before they finally agreed to cancel the service. Was it petty on my part? Yes. Were they entitled to a reason? Fuck no.
Internet service should be a public utility at this point, or at least ISPs should be much more heavily regulated.