Didn’t like something you paid for but can’t get a refund because it’s been over 15 minutes since your purchase? No more, since Google has relaxed the conditions a little and going forward, you’ll have two hours to decide whether your hard earned money was worth spending on that app. Although, it’s still nowhere near the 24 hour windows that Android users enjoyed in the past.
To apply for a refund, visit Play Store > My Apps> [The app you wish to return] and select Refund. The option will only be available if you’re making the refund in the given time frame of two hours. After that, you’ll simply be given an uninstall option instead. Also, if you decide to change your mind and buy the app a second time, you won’t be eligible for a refund that time at all.
[Source]