BrearingPoint interview questions

I have spoke with HR about role requirements, provided benefits and desired salary. The call lasted around 15/20 mins, discussing about my experience and hearing about the company, the services they provide and the main tasks for the role. After 2 weeks I have received a "standard" email saying the company decided to not continue with the hiring process. I have then asked twice for more details on the rejection (e.g. skillset, salary, nationality, etc.) . I didn't receive any reply from HR, not even an acknowledgement on my email being received. Happy to have not have been selected to continue the hiring process, as that shown the true colours of the company and their low level of respect for candidates