I had a written test at their office and 4 rounds of interview. Two by the heads and 2 by hr. Everything happened in a month and they even told me welcome on board and asked my address for sending the offer letter. Then they started ghosted me. I followed up for a month. Calls, texts, message... nothing worked. If you are attending interviews for ET, try other organisations too. There is a high chance that these people might never get back to you.