FDM Group Graduate Role interview questions

I had an appointment for the phone call with the recruitment team and I have never heard back from them again. On the day of the phonecall appointment, they did not only end up not calling me, neither did they return any of my LinkedIn messages nor the emails regarding whether they would like to reschedule the call. I found this rather disappointing and this is definitely not an experience I have expected with a company like this. I hope that is not a frequent case and that I hear from the team at least with a polite email explaining the situation.