This happens to me with a similar make, however my phone already gives me electric shocks through the antennae (The black strips on iphone 4 side). I'm taking my phone to an apple store to be checked out. I reccomend you contact Razer support or the seller ASAP, before further damage is sustained and they may blame you for waiting.
Note:I wouldn't attempt to modify these in any way to stop this before contacting support or seller, as said before. If they're refusing I would put some electrical tape around the metal parts where sound is not projected out.