Pro Recruit Global interview questions

I applied to a position at Proservartner via Pro Recruit Global. Initially, I was asked to confirm my salary range, which I did, and this fell in line with their advertised daily rate. I was then told the salary was above what they were asking for. Anyhow, I accepted the lower salary as the position was remote. I went through two interviews together with completing a PowerPoint slide, including a photograph of myself. A third interview was booked in, and then shortly cancelled. PRG advised they will reschedule it for me and I haven't heard back three weeks later. The advert is still live today. PRG have asked me if I had used a system recently within the last 1-2 years. I responded saying "No, but I have used it for 6 years". They asked me to pretend I have used it recently, as apparently that was not good enough. All interviews with Proservartner lasted 15 minutes each - a really big inconvenience but it shows they are not interested in hiring. PRG come across as fraudulent and I will be requesting they remove my details from their database.