Evolve Scientific Recruitment interview questions

It seems like if you are not perfect at an interview, you will get ghosted until you take the hint. I made a mistake in rescheduling an interview with Evolve and the company in question. I promptly emailed Evolve fix my error. I was told that they would be happy to reschedule me for the next week, and so I waited for a response. The week passed and I called more than once to follow up as they sounded very keen on my application, but after going to voicemail every time with no response, I eventually gave up and moved on. It's not hard to send a courtesy rejection email. The fact that they didn't is unacceptable. I will not be using them to find work in future.