NQR89

I just picked up a 2006 is250 the other day. I notice that my voice command isn't picking up my voice. Also when I'm on a phone call i can hear the other person clearly but they cannot hear me. Is there something wrong with my mic? I tried turning up the volume and even went into the settings and turned up the volume in that menu but I'm still not having any luck. Any help would be greatly appreciated. Thanks