听力原文：W: Good morning. Complaints Department. M: Yes. I'd like to speak to Miss Wang. W: Excuse me, sir. We have a bad connection. Could you speak a little more slowly? M: I-want-to-speak-to-Miss-Wang. W: This is Miss Wang speaking. Can I help you? M: I'm afraid I have to make a serious complaint to you. W: What's the problem? M: I'm sorry to have to say this, but the electronic dictionary you changed for me the other day doesn't work properly, either. I'm really annoyed about it. W: Would you like me to have it changed again? M: Oh, no. I'm tired of it. I'm just calling to find out if I can bring it hack. W: Have you got a receipt? M: I should have one, but I can't find it. It's my fault. Maybe I threw it away right after I went out of the store. W: That's a bit complicated, then. If you don't have a receipt, you can't have your money back. M: But I did buy it from your store. What if I can't find the receipt? W: I'm afraid there isn't much we can do. Would you please have another look for it and contact us? M: I'll do that. Bye. (27)