One of my scores was deleted

Hi,

I registered in musescore in 2012, I spent some time here and put several scores on my profile, all was right, without any problem. Well, today I came back after a long time to see my profile here in musescore, and surprisingly I found out that one of my scores, titled "You're saved (Eres salvo) -Complete version-", wich is a piece enterly of my own, was deleted due a copyright infringement (!), and I've never received a single notice about that from musescore. Now the only information i got when I click the score is the short phrase: "This score is no longer available due to a copyright claim by Sony/ATV", wich is completely nonsense for me.
Please, someone tell me this was a total misunderstanding or error, or give more information in detail, because I don't want to think that musical corporations are actually robbing our music we put in musescore...
I reported this issue to the support as an abuse, but I write here too if that can be helpful.

Sincerely,
Aman

PS: Score: You're saved (Eres salvo) -Complete version-
delete 9 parts 14 pages 3 years ago 535 views
Choir Aahs (5), Violin, Orchestral Harp, Cello, Reed Organ
Copyright infringement