Oligosoft Software Developer interview questions

I gave interview in this company in 2018. It's a worst interview experience of my life. There are no employees ever seen in the premises. Only 2 people sitting there. one man and other women. The interviewer was more interested in my personal life. I was surprised when he already knew a lot of things about my personal life. I asked him how he knows all these things, so he told he stalked me on Facebook to know me better as an employee. What a creep!! I was a fresher at that time and didn't research about this company before going. After coming back from the interview, I googled about Oligosoft and got to know how fraud these people are. They called me again for other rounds of interviews, but I didn't go. They called me many times every day. But never went again. I sensed they are fraud.