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this is the official response from creative. quite poor if you ask me
"Thank you for writing in to Creative.
I understand that you want to purchase a mic for your headset.
With regards to your enquiry, we apologize that we are unable to sell you a new mic to replace the current one which is faulty. This is because mic is sold only together with the whole package and is not available for purchasing separately.
However, you may search other online website to check whether it can be purchased. For example, eBay, Amazon, etc.
My apologies for any inconvenience caused. "
someone could make a fortune out of this.