Comcast Manager interview questions

Panel Interview with would be peers. Lots of hypothetical, not a lot of concrete input and examples of the type of work. They were very nice, polite, and attentive. I hope to join the company at some point.

I received an email from a recruiter on 12/19 advising that they would like to set up a face to face interview on 12/21. I responded on 12/19 advising that I was currently on a large project but would be delighted to interview and will be available anytime 12/21. The response I recieved was "12/21 is the only other day we are doing interviews". I then responded letting him know how important it was for me to finish up this project and asked if there was anyway to get another day scheduled. I recieved no response. I followed-up on 12/20 to ask if he had been able to fit me in on any other day and recieved no response. I felt as thought this was a very unprofessional experience.