NESTA interview questions

Application with three questions, first round interview, and a final second round interview. Took over a week to hear about my outcome from the final interview. They offered feedback, I was keen to receive some. I had not received anything after two weeks - followed up with the recruitment assistant and still nothing. Shocking to offer feedback but refuse to follow up. I have no issue with not getting the job, because if this is how they treat their employees also, I'm not interested.