IQVIA Senior Test Engineer- QA interview questions

I got a call from HR about the interview. They said that it will be a scheduled walk-in, but it was horrible. I had wasted complete day in this walk-in. Any how , i done good at interview and in 2 technical rounds i am shortlisted. Then HR told me to send the recent company offer letter and pay-slips and you will have a final round from Manager via phone interview. But it was almost more than 2 months that i had not received any updates from HR. When i tried reaching the HR, the update was ' We will let you know once we receive update from management' . This is horrible interview.