Was called for an interview .. Reached and there w...

Was called for an interview .. Reached and there was no one at the reception to attend to me and later after waiting for nearly 20mins or so ..a lady walks in, not even interested to ask me why i am here or who am i waiting for.. She just went n sat on her seat at the reception. I walked up n said i have an interview scheduled today, which she didnt pay attention to, and asked me to repeat, i did n then she says who asked you to come ? Evryone has left for the day !!! The hr who scheduled my interview didnt even have the courtesy to inform me that people are not available and or apologise for wasting my time.