JNC TechLabs interview questions

The first round of interview was HR Round then a technical round then after they gave me a task. I have successfully completed and submitted the task with code but after submission they didn't respond well. Only 1 word was written in mail i.e. "Acknowledge" without telling when they will respond with result. When I called 2 or 3 times to HR, she respond with no appropriate answer like I will tell you tomorrow, boss is busy etc. I was quite sure about this job because the task I submitted was correct according to requirement. After more than 2 weeks they respond with answer that they can not proceed me further. So, I think it should not have taken that long to evaluate a simple task. But, anyway thanks for providing me opportunity.