LSEG (London Stock Exchange Group) Software Engineer - Java Developer interview questions

Walk in Interview was there consisting of 5 rounds including mcq ,2 technical, 1 Managerial and 1 HR round. It ws an one day process but final confirmation they will do later. For me I cleared all the rounds and they discuss all the benefits and after they told they will inform me in next few days. But Hr didn't call even mailed multiple times for follow up but he didn't responded. After 20 days I called him as I was able to get his number but he told he is not moving with my candidature. But according to him there ws no specific reason. Worst Interview process there is no visibility and even HR and hiring Team are not professional. I would recommend everyone not to join this organization.