Parker & Simpson Tobacco review: 15g pouch of tobacco

Hi I have found a thick bit of stem in my pouch and it's not the first time I have found it I don't pay the amount I do to find that in there you can't do anything with stem please help me sort this out as I feel I am wasting money now to smoke to find stem and clumps of black tar or something like that yous try make it cheaper for us but put stuff like that in it to make the pouch the 15g but some of it is stuff you can't even use..