Sedang sebel ama milis Apresiasi-Sastra di yahoogroups

Pernahkah anda iseng-iseng masuk ke satu milis (mailing list) seperti milis http://groups.yahoo.com/group/Apresiasi-Sastra/
di yahoogroups tapi begitu ingin berhenti berlangganan gagal? saya telah mengalaminya.
seperti ini kasusnya:

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Apresiasi-Sastra-unsubscribe@yahoogroups.com.

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ga tahu setiap mencoba unsubscribe koq gagal terus. sampai males membersihkan account gmail saya yang selalu dipenuhi puluhan entry tiap harinya...ada yang bisa bantu saya?