Shirley B
Was your application declined and a reason given?
Any requests that you make to the OC have to be treated and considered with reasonableness. If there is no reason or the reason is trite, then you have a good chance of taking to OC to NCAT and winning your request because your request was not treated reasonably.
A help to you would also be to show that there are insects in the vicinity (are you near water for instance) or that you have a west facing unit that gets hot sun as its not shaded otherwise.