I've got 5,000 miles for broken IFE (flying economy) and 15,000 miles for a chauffeur showing up late on a substandard car (flying first).

The first one came without me even complaining, apparently an apology and compensation was automagically given for all skywards members on that flight as the IFE was down for the whole plane.

The second one was a response to a letter, even if I didn't make any demands but merely pointed out that the standard of chauffeur drive in that destination has been less than expected for some time and that maybe Emirates should consider looking into it.

Instead of demanding compensation it may be more productive to merely point out that there was a problem which introduced considerable inconvenience and that you would appreciate if the consumer affairs looked into it. That implies that you expect compensation but saves the staff from having to deal with unnecessary ranting which is likely to make them sympathetic towards your cause instead of putting them on a defensive. That is assuming that the objective is to get compensation instead of anger management.