FACEBOOK THREATENS ME

I just got a warning from Facebook for copyright infringement. They also removed one of my videos that contained background music owned by a third party. A video recorded by me at Arthur's Seat which contained music by Simon & Garfunkel. I don't understand why, as this videos have a very restricted access and I don't make commercial use of them. I see my CALVONET TV broadcast in jeopardy, I hope they don't remove them all and I can keep broadcasting as usual. They also said that another infringement could lead to the cancellation of my account.