Yes i send mail and i have no answer
When did you send it/them? Well, maybe give it some time. There's a lot going on right now plus maybe they are trying to work on new programs, etc. I would think that if you received an answer within a few months that
might be (a guess at my end) a decent timeline in normal times, but mind you, we're dealing with a pandemic! May I ask, why are you so wanting to know who composed the piece? Just curious here.