Zoe Williams in The Guardian is quite interesting on this. And she's right that complaining to official bodies isn't something that we on the left do.
I think she overlooks the reason, though. The joke in the Heinz ad depended on being able to see the narrative's two levels, which was apparently beyond several hundred mouth-frothing recriminalisers. Likewise, her argument about indy-music and car ads, which I endorse, would, I suspect, be a wee bit three dimensional for the ASA.
In other words, those who complain have a wonderfully simple world-view. The rest of us don't have time to complain because we're successfully, just, juggling with several levels of reality. Or something.