Mentor did not join after Rescheduling call

I had booked the call for 13th July with Harsha Gowda but he was unavailable to join the call due to some personal reason. So we had chat in the dm & he mentioned to reconnect today after we both confirmed the timings. Unfortunately, I can’t see him on call & even asked to him on dms. Hence, my time is wasted after 2 times scheduling call with the mentor which I didn’t expect from this platform. Please respect other people’s time if mentor is unavailable for call