TFR
Sounds like you have got a bad deal. I had a few different instructors to start with but settled on one nearer the end. As many others have said, I had a good knowledge base before going off on my QXC, having done 4 previous solo navex trips including a land away.
That said though, during my skills test I was asked to perform a short field landing. I told the examiner I hadn't been shown one before. Different instructors or poorly written notes ? Not sure which was to blame but I hadn't done one before. The examiner explained it to me, I followed what he said and all was well, a successful short field landing and I passed.
Now about to start my IMCR but with a different instructor. The reason being that I felt my PPL instruction wasn't as thorough as it should have been, and the instructor I want to fly for my IMCR with is quite strict, which I feel I need for this next step. My PPL instructor found out, called me up and asked why I wasn't doing it with him. I explained my reasons and he made a comment about having "wasted his money" (he has just qualified to teach IMC) and that I had said I would "do it with him", which I don't recall.
I always enjoyed his instructing during my PPL but because I want to vary my training to see how others instruct I am being made to feel awkward by this individual. To blame me for him spending money on his IMC certificate is at best unfair.
All I can say is do what I am doing, get the best training you can, and if that means changing instructors / schools then do so.