WD Applications Engineer interview questions

Consisted of 1 aptitude round and 2 technical interviews . Worst interview experience ever. Candiates were called at 9am but the process didn't start until 9:40 am. Completed aptitude test by 10:30 am but did not get an f2f interview till 3:30pm. In short they have no respect for other people's time. Also I think that the interviewer must have discovered some new Algorithms because he expected some unrealistic time complexity solutions which do not exist as of now.