Even if we did email them, which I have no intention to, they'd probably just laugh in our faces. At the end of the day. Gareth wasn't the only person in the chart, and there were 4 other songs classed as worse, so that's one of the points they'd use against us.
Like eternal said, at least it's been played. There may be viewers out there that were paying no attention to what the countdown was and were simply listening for the music, and may have liked Gareth. Sometimes, these so-called 'Top 20 worse whatevers' etc can work in favour of the artist, because that same channel is giving it airplay.
EDIT: Does that actually make any sense??