I don't know which is more impressive;  The six days I waited to get my lost bag or the more than one week it's been since I complained and am still waiting for a response.  Awful customer service.  This only happened because I was dumb enough to give up my seat on an international flight for $500 in credit.  I thought I was getting deal.  It turns out I'm a sucker who is going to have to fly this carrier again.