Bits don't fit, Quality issue?

Hi,

I bought the Pro Tech Toolkit and just received it today. I had some Xbox Controllers I needed to take apart so thought id use my new kit. However, none of the bits fit the Torx security screws. I had to use my old non ifixit screwdriver kit which works perfectly. Is this a quality issue with my new kit and has anyone else had this issue? I'm not sure what to do other than to return it :(