PayPal Senior IOS Engineer interview questions

Had 2 rounds of face to face discussion at their Bangalore office after clearing the telephonic interview. Both the rounds went very well. The panel who was suppose to take the remaining rounds wasn't available that day. So, the HR told me the remaining rounds would be schedule another day. I never heard from HR after that. I called HR after couple fo weeks to know that I am not selected for the next round. I asked which round didn't go well, to which she replied both the rounds went bad. I found it little strange. I got couple of offers from very good product based companies and the PayPal interview was one of the best interviews I had. If you decide to reject a candidate, give a proper feedback and communicate properly. Both the rounds of interviews were taken by South Indian guys, and I felt they have discrimination against the North Indians. Only go for their interview if you are a South Indian, otherwise it will be just waste of your time.