Model N interview questions

I was total of 5 rounds 3 technical rounds ------ 1 Techno Managerial & Culture fit ------ 1 HR Python (focused on Object Oriented Programming) - Packages SQL (Joins, Subqueries, Window Functions, Optimization) Pyspark (Spark SQL, DataFrames, Troubleshooting spark jobs and Optimization) Data Warehousing concepts (From Data Extractions to Data Loading (Deepdive))

Recruiter contacted me to schedule an interview. About 10 minutes past the start time I got an email that he was having issues and would reschedule. Followed up several times but he never responded with an option. Unexpected things can happen, but this experience was at best unprofessional.