PurpleBug Multimedia Designer interview questions

I applied online through their careers page. A day or two after, I was called through my mobile number about my past work experiences, past salary, salary expectations, and work setup expectations. I was given an assessment exam of 3 outputs to do. They never got back to me after I passed the assessment through email even after following up, still no response. Getting a rejection email would at least be more considerate after giving a 3 output exam.