Limbo literally

I bought this game and 5 minutes later and many tries realized that that I cannot jump high enough to reach a edge. I went to their help site and cannot find an answer....then looking around found there are help apps for this game at a price of course. After paying $4.99 for the game, Im not paying $1.00 to $2.99 for a help app. I been in the game for less than 5 minutes for Petes sake.
I need to figure out how to get a refund on this ... I want my money back...
And I have the new iPad Air ...tsk tsk

sample54 about Playdead's LIMBO