Only experienced it once, in the USA strangely enough.
The instructor was meant to be converting me to complex type and was a laid back 'surf dude' more interested in the wave conditions than the flying - the briefings did not give me what I needed, and the debrief was truncated (I do like to reflect and learn this way.).
After a disappointing first day I had a reasonable discussion with him and explained why I wanted things to be different the next day.
There was no change, so I went to his boss and asked for a different instructor, stressing that I wasn't doubting the bloke's ability, but thought that we were not ideally matched in temperament and that it would not work out.
I was assigned a different instructor, with whom I had a very productive 5 hours of flying and still managed to have a farewell beer with the original instructor, who was a nice guy.