IDP IELTS — i'm complaining about my result which was not declared by idp ielts

I am harsimratpal singh and my passport number is 2490978. I gave my ielts idp exam on 23 march 2019, my candidate number is 496663 and the result was out on 5 april 2019. But my result was not declared. Idp said it had gone under investigation and there is no stipulated time for the result. How is it possible. I have to file my case for july intake but due to this delay i am not able to file my study visa. Really i did not expected this kind of behavior from idp. I called them number of times but they dont know anything about my result.