Experian interview questions

I recently experienced one of the worst interview processes ever. The process involved three rounds, all scheduled for U.S. morning time, which meant they took place late at night in India. Despite the inconvenience, I completed all the rounds. During the HR round, I was told I would receive an offer within a week. However, after 3-4 days, I was informed that the person responsible for approving the letter was on vacation, and I should expect it by the following week. When the next week arrived, I was told they were waiting for a final list. Two days later, I still had not received any update as they were still waiting for the final list. As a candidate who invested significant time and effort, I believe I deserved a proper closure, whether I was selected or rejected. These ghosting tactics are highly unprofessional. Initially, I had a very positive impression of the company, but this turned out to be the worst interview process I have ever experienced.