1.
If it isn't suitable, can I bring it back?
如果不合适，我能拿回来吗？
Could you bag them for me?
你能帮我把它们打包吗？
suitable['su:təbl] adj.合适的
2.
Sorry, you may exchange it but not return it for a refund.
抱歉，你可以换，但不能退款。
Do you want to exchange this or get a refund?
你是想换一个呢，还是退款？
3.
I don't want a refund, I just want a new one.
我不想退款，只想换一个新的。
I'd like to return this for a new one.
我想把这个退了换一个新的。
4.
I'd like to return this.
我想退货。
Could you exchange this, please?
您能把这个给我换一下吗？
5.
Can I have a refund?
我可以退款吗？
I'd like to get a refund, please.
我想退款。
I'd like my money back, please.
请把钱退给我吧。
6.
This TV broke, I need to return it.
这台电视坏了，我要退货。
I bought this TV, and it broke.
我买了这台电视，坏了。
7.
Hi, I'd like to make an exchange on this shirt. It doesn't fit.
嗨，我想把这件衬衫换一下，它不合身。