In the ringtone selection list there should be a play button to the left of the ringtone title. Tap that for a preview. You should not have to call to preview the song.
If the play button is not appearing, then something is wrong. Try a Soft Reset. Hold the Volume Down + Power buttons until the phone vibrates and reboots (about 10 seconds).
If that does not work, then you need to Hard Reset. Power off the phone > hold Volume Down > press Power > keep holding Volume Down until you see the exclamation (
!) screen, then immediately release the Volume Down
Now tap Volume Up / Volume Down / Power / Volume Down
You should see the spinning gears and your phone will reflash the last OS version held in recovery. You do loose data, but get your phone back. Sign into your Microsoft Account and restore your backup during the set up.
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