I'm considering bringing back my EVO 3d to get a Nexus S 4g. The problem is I bought my 3d at Radio Shack and I also traded in my EVO 4g I also pre ordered the 3d so I paid $50 of it with the gift card. My fear is they will only give me store credit due to this and not a refund so I can pick up the nexus at best buy. Has anyone tried returning there 3d and knows for sure?