Hello everybody

My account has a subscription free. So I receive publicity. But now I can't listen the musics because it says me that my 10 hours are expired. 

First I thinked that with a subscription Free we could listen all time with publicity of course. Is there a limit with this subscription free?

If there is, is it possible to take back a free listening and How can I do it?

If there is not, How can I recover my musics?

Thanks for yor help

(Sorry for my bad English, i'm not an Englishman)