Symphony Fintech interview questions

I was interviewed for the role of software Developer. I got a call from HR that I have been selected for given role and told me to share documents. After salary discussion , I got email from HR saying , they have selected the candidate whose profile closely matches the job requirements of the position. If this is the case, then why they called me. Then I called HR for the same, she was very rude, unprofessional behaviour,giving unsatiesfied reasons. Wouldn't recommend.