Perguntas de entrevista de vagas de Senior Software Engineer, Core da empresa Payscale

I applied online and was contacted by recruiter within 3 days. We had back and forth email conversation to decide the phone call availability. We both settled on one specific time slot for a phone call. The recruiter never called on the decided time. I tried sending many messages but he never responded. Its been 3+ weeks but still no response yet. This is so weird and frustrating experience.