Gartner Software Engineer interview questions

I had several interviews with them being the last one a big and exhaustive 2h interview with different interviewers. Affter that 3 weeks have passed and nothing, not even a "You did not pass" message.They are ignoring my messages asking for a result or feedback. I do not recommend this kind of company.

Step 1- telephonic round, job description, previous roles, skills Round 2- face to face technical round Round 3- Assignment based on coding and SQL Round 4- hr and management round