274.
M: Customer Service. Anthony Grant speaking. How may I help you?
W: I can't believe this is happening. I called and ordered a 32-inch bag last Friday. But today I found that you sent a 24-inch one. I'm planning to use that bag during our vacation in Mexico. But it doesn't seem possible any more, because we'll take off on Saturday. It's only 2 days away. What am I supposed to do?
M: I'm really sorry, madam. I'll check right away. Would you please tell me your order number?
W: It's CE2938.
M: Just a minute. I do apologize, madam. There did seem to be a mistake. I'll have the correct size bag sent to you by overnight mail right away. It will arrive in time for your Saturday trip. Again I apologize for any inconvenience caused by our mistake. I promise it won't happen again.
W: OK, well. Thank you.
M: Thank you, madam, for choosing Lynch Mail. I hope you have a wonderful vacation.

答案解析：
(1) 正确答案为A。根据I can't believe this is happening. 我真不敢相信会发生这样的事。从说话语气可知，女子很气愤，因此A项正确。
(2) 正确答案为C。根据I'm planning to use that bag during our vacation in Mexico.我打算去墨西哥旅行时带那个包以及we'll take off on Saturday 我们周六出发。可知，女子将于周六启程前往墨西哥，因此C项正确。
(3) 正确答案为A。根据Thank you, madam, for choosing Lynch Mail. 女士，谢谢您选择林奇邮递。可知，男子在一家邮购公司工作，因此A项正确。