That sucks! It was a good price for the bow. All you have to do next time you see one is pull it back and see what the string alignment looks like in reference to the nocks. If the limbs are a little crooked I'll take it off your hands
. The Grizzly is a very good shooting, economical bow. If it's noisy the brace height is not right or the arrow spline you are shooting is wrong. Most of the Bears have a brace height around 7 1/4- 8". You have to play with it till you find the sweet spot.
Usually when one blows it's because it was stored in a hot environment (rolled up truck), not because it was left strung. I've had some of mine strung for years.