Wipro Software Engineer interview questions

Firstly there was online test that consisted aptitude,English and coding questions. Then there was technical interview and they asked about projects and basic questions about subjects. And then there was hr round.

I had a TR and HR round after passing the aptitude before. The TR was easy, and mostly the questions was general. And after TR , he told that I'm selected to HR round. The HR round was also easy, that I thought I will get selected. But after some days a call came that I will have another HR round which is not face-to-face but a video calling. Because they lost the data of the face-to-face HR round happened.That was also easy. I was sure that I will get this job. But unfortunately no mail came from Wipro. After sending many mails , I got a reply that I'm rejected. But I don't know why???