I have had problems with Caron before with knots... I hate them, but do understand that one or two will happen from time to time. I usually cut them and then re-join my yarn as though I was starting a new skein. It is a pain, but not so bad when you are only dealing with a knot or two.
The previous posts said it - contact the company. Good luck, I'm sorry about your yarn. It is frustrating.
OTN - lacy sweater and just beginning another pair of socks - toe up
FO's: garterstitch scarf, dropped stitch cable fingerless mittens, socks for Christmas, and 6 baby hats, cabled toddler hat, hat for mom, MIL socks
My blog: http://knitquiltmom.blogspot.com/
I'm knitquiltmom on Ravelry... I'm slowly loading my projects. I also have several patterns that are being offered as free downloads.