Replying to Skullcandy Warantee?

I sent my smokin buds in for a replacement under waranty about six weeks back. About three-four weeks ago I receive an email saying that they received the headphones and that they will fully replace the product and that they would ship them out. So it has been about five weeks from that email and I still haven't recieved them yet. I have been sending them emails asking for a tracking #, but they haven't responded. Has anyone out there ever had to warranty your skullcandys? How long did it take for them to come in?