Should I raise an official Police Complaint?

[EDManual]

Driving along the highway back to Geelong yesterday doing maybe 103km/h in came across a silver wagon ss commodore undercover police car doing maybe 95km/h in the middle land, went to pass him and he sped up to my speed (I knew he was a cop) so didnt speed up any more. Then I slowed down to 95, so did he, then I sped up to 100, so did he, then 105 so did he, then back down to 100 etc for maybe 5 km!!

What was he trying to do?...(its an easy guess) I couldnt pass him without speeding....

Anyway I thought "good stuff cop" so looked at him shaking my head and holding one of my hands out as in "what are you doing?" then he turned off towards Geelong and I continued down the Geelong ring road.

Now being one to have got a few tickets over time, It would be great to cause some problems for any Policeman doing the wrong thing.

I rang up the Geelong Station issued a complaint, but couldnt really be bothered with all the rigmarole of doing an official one. They said they would have a word to the driver of that car.

Now thinking maybe I should have done the official complaint, they said they would do an investigation if I did an official one.