Call with HR, then onwards to call with hiring manager to discuss the role and assess skill level, fit for the role / fit for the company. Pretty standard start-up type interview process. Had the call with hiring manager scheduled, but informed them (a day prior) that I would no longer be able to progress in this process. Did not receive any email reply acknowledging they received my email nor any formal cancellation of meeting. Showed up the next day on time to our meeting with the intention of informing hiring manager of the situation, but hiring manager was either late or already informed of my situation. Waited for 20 minutes on the call by myself and then left. If I can show you the courtesy of sending you an email about my reasons, you can at least reciprocate that level of respect for my time by sending a meeting cancellation back to notify me right? Am I a person or a piece of rubbish you toss into a nearby bin? Could have been a brief and cordial exchange, but this unprofessionalism left me astounded.