I recently purchased the Sylvania Bluetooth Autoset Clock Radio with USB Charging... Model Number: SCR1986BT-AS from Wal-Mart. When I took it out of the box, in order to plug it up and set it, there was no power cable. I have no way of plugging it up. The manual says that the cord is suppose to be included, but it wasn't in the box. Who do I need to contact in order to have one sent to me?