The gods don't believe them; they know their own safeguards and measures are more than up to the job, and would alert them the moment the Titan began its escape. But since the PCs insist they'll look in on things soon. Next century, say.

But they are willing to reward the heroes who came to see them in person; it's an impressive feat, and has won them the respect of the gods. So they're given gifts; mighty spells of protection, weapons and armour from the Forge of the Gods. Gifts and blessings the like of which mortal man has not seen in millennia. They may not have gotten what they wanted... but they have gotten things that are damned useful to them and their goal.

And on their way back, they get tangled up with the Titan's minions since of course it's been keeping watch on the dwelling place of the gods, and what's to bush-whack the PCs since it now knows (or suspects) they're on to it, and it can't let them live, now, can it?