Since yesterday night (I think), when my friend told me that he had already deducted his 6 credits without downloading any posters, and I was shock, and I re-sign in my account, it has already deducted 2 credits of mine also! and I was nervous, try to make some download, and today morning, I found out my credit being deducted again, what's happening actually????
Thanks for giving any answer.

probably, bigger posters has been uploaded and replace yours, or some of yours is duplicated and has been cleaned/deleted.
Don't suffer.please.