I found a 3-4 inch long worm like substance in my ice-tea bottle (Nestle), what could i do about this? ?

I bought it from Woolworths and upon reaching home i placed it in the refrigerator. After a while my flatmate, wanting a drink, took it out only to see something floating at the bottom. At first we thought it was a tea leave but on more inspection we were pretty sure it was some kind of dead/living worm-kind thing. It is 3 to 4 inches long and has got a tapeworm feel to it. It is hard to say what it is but definitely not something to be had in an ice tea. I am staggered by the discovery and feel cheated by Nestle, which has for long been a quality name for me.