Serco management in Baghdad is not the be all and end all. Clipped Wings is right - the standards and policies of the company apply to all. The way that management there are behaving may well lead you to believe otherwise, but if you're not getting satisfaction there - go higher. Every manager reports to someone and the negative sentiment towards the company evident and being broadcast on here WILL matter to someone in the food chain, trust me.
If you have genuine grievances on issues that should have been handled better, then let it be known.