Delhivery Software development engineer React interview questions

HR got my resume and called me to setup interview just after one day. She gave me no info as to what is the process but anyway I gave the interview. The interview went really good and i couldn't possibly think of a reason to get rejected, or not atleast get to the next round if there was any. After a few days I tried to reach the HR as well as the interviewer through mail and calls, but they outright ghosted and ignored. Didn't expect this from a company like this.