Jack57
The first two groups you mentioned are Freighter Commands. Have you applied for a Freighter Command? If not, do you have any reason to complain?
The 3rd group, DEFO's, have always been allowed for in the COS and, to be fair, the company have always been up front that they will employ them as, and when, they deem fit. It also fair to say, the company has been less than up front about paying BPP and it is hoped that will be rectified in the coming weeks.