NextGen Healthcare Full Stack Developer interview questions

One of the worst experience for me to attend for nextgen in Bangalore. Waited for 2 hours. Almost they called around 300 members on Saturday. Junk process. First round of interview finished 15 minutes. And they said me I have to leave. Interviewer is not interested to take any interview. Seems like his manager forced him to come on Saturday for taking interviews. I travelled 100 kilometres on weekend to attend this. They spoiled my weekend. Waste of attending interviews for this company in Bangalore.