Frozen veg disgrace

I would just like to say how shocked I am at one of your products "Natures Garden country stir fry". After cooking a delicious meal, to having 3 of my family members choking and what seems to be thorns. How distgusting. I had to ask my kids to stop eating as we weren't sure which bunch had them. This is completely unacceptable and a health risk!! Are your products not checked before being sealed in packaging?? Please explain what is going to be done about this. I will not recommend that anyone buys this frozen vegetable