Got through the assessment, got interview, then nothing...

I was successful at the Pareto assessment day. Although the day lasted two hours longer than expected causing people to miss trains home, and was generally disorganised, I was really excited to have been successful. A week later I was sent to an interview....and then a second interview with the same company. After my second interview the recruitment consultant I had dealt with called me saying he would speak to the company and call me the same day with feedback. This was three weeks ago and I am unable to get in touch with him. It's been pretty unprofessional and I feel like my time was wasted.