Mic is bugging with the controller

Ever since I got this controller every once in a while my mic will start cutting in and out really quickly and makes me sound like a robot. Ive bought 2 mics and cords too see if it was my mic but the same thing kept happening. Im pretty sure the place where you plug the cord is messed up. Ive tested it with my other controllers and they all lock the plug in, this one doesnt. I ordered it on the microsoft store but they never responded to me and I need to ask if i can return it of get a new one