Well said China Doll. I used to be a serving "Copper" and, in fairness, had some complaints made about me, as befalls the vast majority of Officers, simply because it is so simple for someone to take offence at all manner of Police behaviour. I can assure you, though, as I said earlier, that 99% of "Cops" are only trying to make the best of an almost impossible occupation, i.e. "You can please most of the people most of the time.." etc etc.
No one likes to be told that they're supposedly not doing their job correctly, but if a complaint is genuine and has substance to it, then by all means it must be dealt with satisfactorily. That however is far from the case in many complaints against Police, a massive percentage of which are malicious.
How many bogus complainants would try to do the job in the first place? Not many I can tell you.