Voice Memo lost after iPhone 4 ran out of charge

So I was making a recording via voice memo on my iPhone 4 but it ran out of power during the recording and I heard a ding when it went off, and I though that meant it ended the recording. But then I charged my iPhone back up and the recording was only 0 seconds long. It was all deleted. Is there anyway I can get my recording back so that I can get my recording back or is technology just a bìtch. And when I say anyway that spans from an easy simple way to a complex expensive way done by an engineer (just in case I get rich)

It wasn't all deleted ... it was not saved. Recordings are saved when the recording ends, but in this case the iPhone lost power so it could not do this. I can't say it's impossible, but my firm belief is that the recording was never saved and thus never existed, so you can't recover it.

On my iPhone, I get warnings when the battery gets low. Did you not get these?