Question 27 - 29 refer to following paragraph:

M: I just received my invoice from the gas company in the mail. I can’t believe the cost
W: Mine was quite high, too. I think it’s because I’ve been using my heater so much in this cold weather.
M: I have as well. However, I still believe it’s higher than it should be. Maybe I should contact the gas company to see if they regular rates have increased.
W: sounds like a good idea. Their customer service department is vey attentive. Keep me updated on what they tell you. What are the speakers talking about?
27. What would the woman like the man to do?