I'm not averse to endless repeats, not if it has the desired impact and outcome ( I used to be a teacher). Being reasonable and objective, as much as possible, in tone is important. Sometimes it is not the just the message but the way that it is delivered which can make the difference.
Persistence is key.
As you do seem to be on a mission to tone police all over this board@NotHavingIt do you realise just how patronising and smug you come across when you post comments such as the one above?
You speak to us as if were are still wet behind the ears on this subject.
FYI I have always been persistent and consistent and I use simple, straightforward language so the message is not lost. I do not and will not couch my words in flowery, fluffy verbiage, I will not apologise for saying the word 'No', or anything else clearly and distinctly.
There is nothing I detest more than using 20 words to say something when half that figure would be more than adequate.