What is the interview process of HCL Technologies for 2-8 yrs of experienced professionals?

I got HR number from one of my friend and every time he says that they do not have position to map.

I have appeared for interview thrice for interview in HCL since 2018. All the three times I got selected and had a discussion with HR regarding salary package. HR agreed and I received an email to upload documents 2 or 3 days later.

Each time, after uploading of documents, no one contacted me. I got HR number from one of my friend and every time he says that they do not have position to map. Don't know why do they conduct interviews in bulk when they do not have positions.