It's just KNOT on

Knitting yarn is getting very expensive, so when you find knots a few metres into a ball it is very frustrating.  I am knitting with a mohair blend and could not believe it when I came to a knot after only two rows.  From now on I am going to contact these people and complain, cause it's just not good enough.  Maybe even start a name and shame.  Or they should be made to state on the labels that there are knots in this ball and drop the price accordingly.  I know that there are more pressing matters in the world to deal with, but it still makes me mad and it is all the little things that add up to make me even grumpier, grrrrrrr