Infosys Developer interview questions

Was reached out to by the Talent acquisition group(TAG). After 2 months from being contacted(no updates whatsoever) TAG calls out of the blue and says I have been scheduled for an interview. Only a 1 hr notice is given for the same. Absolutely no respect for an individual's time. You join the conference call, with video enabled. They can see you, but you can not see them.This is awkward. They don't introduce themselves. Not even a name. The interviewer is not knowledgeable and doesn't possess even a basic understanding over a lot of topics. Once the interview was done I followed up with the TAG a week later first via email and then phone call. They don't have the courtesy to respond to emails or phone calls. Totally unprofessional. Again the same TAG member reaches out to me for the same role( Just a week after I have been interviewed). Can't you guys at least manage an excel or something??Has absolutely no recollection that I have been interviewed and when I respond to the email pointing this out, no response. Hilarious!!!