Oracle Java Software Developer interview questions

I applied through portal and got an email from company HR asking for updated profile and some basic details. After that HR scheduled a telephonic interview on the next week day, after that when asked for feedback HR mentioned you've cleared the telephonic and you'll be having second round face to face and next day I got an email for F2F interview at Bangalore. I went 30 mins prior to the scheduled time and once I checked with security they are not aware that there is any interview scheduled and when I called HR number (as given in the email signature and the number from which I got call) both the numbers are some persons private number. I dropped email multiple times but didn't get any response. The same process happened once again, but this time I directly asked telephonic interviewer for feedback and he mentioned its positive, but when I asked HR for feedback continuously for 6 days then on the 6th day email she replied saying that you didn't clear the telephonic round. I don't know whether they want to take interview or not. But please if you get any call from Oracle please ask for the contact number which is not someone's personal number.