Anyone ever deal with their customer support? The lid on my brand new unit doesn't fit (I got this on Wednesday) - won't maintain temperature at all because of gaps in lid. (See photo) - Even when I push/squeeze on that side to get that little foot in the groove, the other side pushes out at its seam. Their guarantee states they ONLY guarantee WORKING PARTS - a lid isn't considered a working part. I'm screwed, yes?