Sutherland Technical Support interview questions

They called me for an interview, and scheduled two different dates because there it was a system error occurred as they don't work on Saturday 05/07 so I joined the correct call on 07/07 to be interviewed and hopefully be able to start on 14/07. A few days later, they sent me a communication in regard to application rejection and on 15/07 they have posted again the same job offer on Linkedin and interviewed a friend of mine...no explanation for this behavior and they wasted my time and obviously they are still looking for the position. No words...