You are absolutely right, it is not easy.

Unfortunately, the point is that they are withholding what you want i.e. an answer. So, what to do? Going over it in your mind over and over again sounds painful enough and will not resolve the situation. If anything, it just keeps the pain alive.

It is like when you have a wound or a scab, try to distract yourself and not keep picking at the wound.

I am just encouraging you to try and not dwell on these people so much, or the why's of the situation. There is no way to know why. By all means, vent about it but then distract and try to move on. Build other resources, other distractions, other support systems so your mind won't snap back to them and the wound won't seem so fresh. It will take time. It won't happen overnight but you have to try to help yourself.