If you are having technical issues with your Sprint device then I suggest bringing the device into a store near you. You can use this locator to find the store - http://storelocator.sprint.com/locator/
The issue in GetHuman-katyfran's own words
In roblox, I just bought $* of Robux and the pop-up afterward said Successful. But the Robux are not in my account
GetHuman-katyfran did not yet indicate what ROBLOX should do to make this right.
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How GetHuman-katyfran fixed the problem
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