Natenismo

So my car failed the nct last week, fail sheet states the subframe is bent/deformed, the car has been to three mechanics and all of them said the subframe is not bent and also tracking is perfect and slip test perfect, but from what we can see there is one thing, there is a bracket attached to the rear subframe for the petrol tank that is not completely straight, is it possible that's what the fail is even though it doesn't comprise the structural integrity of the vehicle? And if it is the case of it just being the bracket I really don't understand as the man testing the car said I would be better off getting a full new subframe