X Star Technology interview questions

HR called me on a Monday for interview. We decided on date and time for Thursday but yet to confirm with Hiring Manager. Tuesday Wednesday passed, no confirmation email or text received. Thursday - HR texts at 12am confirming the interview. I agreed for the interview at 12:30PM even though this has been very last minute. Thursday 12PMish, 3min into my cab ride otw, HR tells me hiring manager is on leave but he will do a phone call interview instead. I was frustrated but HR did pay back my cab fee. Hiring manager never called nor picked up when I called. He only called nearing 1PM but I was done. HR cancelled and apologised. Please do think twice before joining this company.