It has been an HR interview , and i found the interview was nice and I didn't feel any stress to talk about myself, and at the end of the interview they tell me that they will send a technical task to finish it through a certain time and then sent it back to them for reviewing, but after i finished it and sent it to them ,they didn't sent me back any response after that i tried to reach them through email but they didn't answer , i'm just inquiring why even they not sending me a rejection email.