Good evening, madam. Can I help you?
Yes. I bought this sheet here yesterday.
Anything wrong with it?
Yes. When I spread it out back home, I found this hole.
Oh, how awful! May I have a look at the invoice?
Here it is.
Well. please accept our sincere apologies, I'll be glad to change it for another one if you wish.
That's very kind of you. Thank you.
We're sorry that this has happened, and I guarantee that the same mistake won't happen again.