PepsiCo Senior Graphic Designer interview questions

The Asked you to do a ridiculously vast test which I have never seen in my ten-year career, and after you complete their test over the weekend and submitted your assignment, they don't even bother to send you an acknowledgement email, when I call HR she said she will revert back but never did, you don't expect this kind of treatment from a world-class company, even if you are rejected you should expect an email or phone call right? I am only writing this email so that maybe they will rectify this behaviour in future. this is for Pepsico India, Hyderabad office.