Hey Cookie, if it's the same product you used before - same model/headset etc. Then that product's defective and you should get it replaced.
If you're plugging it into you computer or laptop and and it's a new problem, the headphone jack on the computer may be the problem. A PC tower would have two ports for headphones. One on the front and one on the back, the back is less likely to have electrical interference causing a static sound.