First interview with HR;
Second interview with technical support engineers;
Third interview with technical support region head, and he assigned a challenge and gave you two weeks;
In the middle of challenge, HR asked me to do the fourth interview with local technical support team;
And later, they told I didn't pass the fourth interview. Therefore, what you have done for the challenge is deprecated.
I mean what the point of doing a challenge while having another interview in the middle that say people is not suitable ??????