I'd like to return this.
I bought the wrong size.
I found a stain here.
It's broken here.
It doesn't work at all.
It broke after I use it only a few times.
I used it properly.
I think it's a substandard goods.
It can be refunded if there's something wrong with it.
How long is the term of service?
Did you bring the receipt with you?
Here is the receipt.
May I have another brand instead?
You can't return it,because it's 1-day past due.
I'm afraid we can't refund you after it's washed.