Walmart Global Tech Software Developer 3 interview questions

This whole process was very un co ordinated and a huge waste of my time. First they shortlisted me then scheduled an interview. On the date of the interview the interviewer had an "issue" and cancelled the interview. After that I have no calls or whatsoever regarding the interview and the poc does not respond to my calls or emails. And in the portal it says shortlisted. They should atleast have the courtesy of responding back with any response. Its is their responsibility to update the candidate. Atleast a week after all this hassle. Overall it was a huge mistake I applied for Walmart Labs, expecting a proper response