Can you tell more about the problem? I read many forums and all users, no one excluded, have same complains about the mic. Is this problem affecting all P2 lite sold until now?
Also, can you be clear about the nature of the problem? Is software or hardware? Because today a your representative on a russian forum wrote that next week a software update that solves the problem will be released. Is this correct? Or, if it's and hardware problem, is the factory now aware of this and producing phones whit a working mic right now?
Returning the device to the e-seller is not easy, cheap nor a fast procedure, and until you make an OFFICIAL statements we clients and reviewers don't know what to do.