The customer can’t have a refund because

M: Excuse me! I’d like to return this sweater for a refund. The first time I washed it, it shrank at least two sizes.
F: Oh, that’s a clearance item. But don’t worry. It’s also refundable within 7 days after purchase. Do you have the receipt?
M: Here it is.
F: Sorry, I am afraid I cannot refund this, because you bought it 8 days ago.
M: Oh, I didn’t realize that.

M: How much commission fee do you charge if you help us market the product?
F: Well, normally, we work on a commission of around 13% for each order.
M: Oh, I think our boss usually pays around 8%.
F: Your project involves quite a lot of promotions, dealing with customers and so on.
M: Yeah, I can see that. But I am afraid the best we can do is a three percent rise.