Do you think making false 999 calls is acceptable too?
As I understand it D&D both invite and welcome training calls.
The 999 service does not.
Therefore it's not fair to compare the two. Apples & Oranges come to mind.
I agree with Sky Torque. Best to own up and admit your problem. But if using the word training in the call, makes some people make the call, where they otherwise wouldn't, then it's better than them not making the call at all.
dp