Hey Cedric, I've been using the headset since it was released and I haven't had any problems. Neither wired nor wireless. Have you ever thought about whether it's your connection, your computer or the person you're talking to? I find the headset to be top-notch (especially because I wear glasses), so I would rather check again whether you have interface problems.
I also had this headset. I also looked for it at the time, but didn't find anything. Even on the manufacturer's website, you can't see that the pads are sold separately.