Your response may make perfect sense to a controller.
I am a pilot. Why is it so difficult when asking "how long will our delay be" to get a straight, rough answer as to how long our delay will be. Roughly. Ball park.
There are several controllers that go out of thier way to keep it secret. Most dont, but I dont write the ATC roster.
I especially like it when the response is "well, they have x minutes of flow control". Great. Unless you also state the number of aircraft in line, this pearl of wisdom , along with a couple of dollars, will buy you a cup of coffee.