OptiPhoeniX interview questions

They have taken 5 rounds of interviews: 1st Design discussion, 2nd Assignment round, 3rd Assignment Discussion round, 4th Tech Manager discussion, 5th Cultural Fit. But after all the rounds, HR did not pick up any call, not even call back. Also, the brand's goal is not to improve its market value, and given very egoistic answer to my question. Never Join, guys. It'll waste your career life.