Greenpoint Technologies Engineer interview questions

I interviewed for an engineer position. I first spoke to the HR person and got through the first screening. Then I had my second interview with the hiring manager. HR told them the wrong time, so they called me a few hours early. I still did the interview. Afterwards, just crickets. No response to how I did. There was no professional courtesy which is very rude and inconsiderate. Definitely not how you should treat professionals.