If only you had posted this a week earlier!
I had booked with JamboJet, a return flight on that route but had to unavoidably change my travel plans altogether.
It was one those rock bottom offers, hence I never bothered to defer the travel dates (I've not decided on new travel dates yet).
So, yes, keep trying. There's probably someone out there who is in a similar situation.
¡ʇɹoɟɟǝ ƃuıɟɟǝ ǝɥʇ ɹoɟ ɥɔnɯ os ؛uıɐʌ uı ɔıqɐɹɐ ƃuıuɹɐǝן pǝıɹʇ ı