I suggest following up n a week if you haven't heard anything. It was clear once I got a hold of them 2 weeks after cutting the cable (such a waste, I could tape the headband and give it to some homeless dude or something who wouldn't care) that they hadn't even started the process of sending them yet. The next day I got the fedex notification of shipment and they were being overnighted from Taiwan.
They changed manufacturers for a time when they blew up and it bit them in the ass. Every headband from a certain period of manufacturing is guaranteed to fail at some point. They use someone else now and the problem doesn't seem to exist, but I think the brand damage is done. However, I would note that the sonic signature on the new headset i received was a bit improved sounding.