Cooper Parry Manager interview questions

I was contacted soon after submitting my CV to undertake a telephone interview, I made childcare arrangements to be available and prepared by reading about the organisation and it’s vision / values. At the agreed time I waited for the call, after 10minutes and not being contacted I rang cooper parry HQ to be put through to a voicemail where I left a message. I followed this up with an email to the HR contact where the immediate response was an apology and that it would be possible to reschedule. I received no further contact from cooper parry. I was surprised and disappointed by this experience, I had heard that Cooper parry is people focused and I treat the interview as a dual process where I also assess if I would like to work at the organisation. Based on this engagement with Cooper Parry where I was shown no courtesy in terms of my time and arrangements this does not align with my values.