Gazzad
Those officers are unwittingly doing you a favour. You should now have even more determination to get on the course and pass.
Many years ago I had to get an officer's approval to start selection for a then little-known organisation. He allowed me to go, but said I would fail. I didn't.
As an NCO you should already know that one of the British Army's most dangerous assets is an officer with a map. They really should leave the technical stuff to their chaps.