Boston Consulting Group Administrative Assistant interview questions

I had applied through their website and then got a call the next day to set up two video conference interviews for the next week. Those went well and I was invited to meet the supervisor over the administrative assistant's the next week. The interview went well and I was told to expect a decision in the next few days. I met with him on a Tuesday, and still have not heard anything back almost 4 weeks later. This was around the holidays so I understand people being out and catching up, but this is ridiculous to not hear anything back from such a reputable company. I am disappointed that I do not have any closure on this job as I did highly respect the company and its reputation.