Mammoet Design Engineer interview questions

Met with the human resource manager and the head of engineering at the office Standard behavioral interview questions with some technical questions to evaluate my thought process The HR representative explicitly told me that he would call me back within two weeks to let me know if I got the position or not because he had been left on the hook many times. Not only did he not call back, but I sent him an email to follow up, to which he ignored and when I called him he acted like he did not know who I was. It was completely unprofessional