Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Terrible service

I'd love to read The Nation and give a review based on content, but in the two and a half months since I subscribed, I've received two issues, several weeks apart. I have, however, received several demands for payment. Yesterday when they claimed they'd sent eight issues, I told them to cancel the subscription. If their service is that bad, I can do without it.