Lies and Deceit: They just stole my work and then ghosted me the HR representative never contacted me after 3 assignments and 4 phone calls/virtual interviews. Stay away from this company!

An initial phone interview after submitting a resume', followed by a more detailed interview with a project manager and director. I was contacted by an HR representative who conducted the initial phone interview, which was about 30 minutes. I received an email the next day inviting me to continue the process with a second interview with a project manager and director and instructions to write 10 items that would be representative of my work. The interview was to be over Skype, which unfortunately wasn't working, so we had a conference call. The interviewers were polite and professional and allowed me time to think about my answers before actually answering their questions, however, there was no feedback regarding the 10 items I submitted, which was disappointing after all the time and effort I had put into writing the items. Unfortunately I didn't receive an offer, which I understand, but what I don't understand is the lack of courtesy shown by HR that someone else had been selected.