I need help!!

Basically sen my 2 controller back in paril as was undet warranty and they needed replacing and i had 2 back within a week its been 2 months amd still havent recived my other controller. They are blaming it on np stock. I dont know what to do anymore i paid alot of money for this vr and ive had about enoigh of the same generated emails from them np actual update for 2 months