如果有外国人来商场投诉,一般需要用到哪些英语单词啊,

对不起：Sorry请问您遇到什么麻烦了吗：What's the matter?您所购买的是哪个型号的产品：Which type of product did you buy?请出示您的购物凭证：Pleases show me your shopping voucher。您是几号将它购得的:What's the date did you buy?您是怎样使用它的:How did you use it?我会及时向我们的经理汇报的:I will report it to my manager immediately我们会对它进行维修直到您满意为止:We won't repair it untill you are pleased。请您放心:Please don't worry more。退货服务:Return service售后服务:After-sales service对不起,这是我们工作的失误:Sorry, that's our mistakes。谢谢您的宝贵意见:Thanks for your valuable suggestions。