高手帮我看看这段英语有没有错误?

高手帮我看看这段英语有没有错误?
Do customers actually come and ask you for advice?
Yes,they do.Often they’re hear know a piece of music from the advert or the television.They don’t know it and they want to buy it.So they come and ask if you know it.We get people who come in and whistle,a few notes of something they’re heard and,they expect us to know it.So we do spend a lot of time with customers.We do have to be quite customers-oriented.

原文是很地道的英语口语.只是Often they’re hear know a piece of music from the advert or the television一句有点问题（不知是你打错了还是听错了,很可能句子中的're是说话者用来口头语eh,口语中常用这里音节来拖延时间来思考该怎么说,另外,know可能是另一个口头语,you know,作用同上,没什么具体含义,有时可以省略为know,但书写的时候要用逗号或破折号和前后隔开）,句子结构有些混乱.如改成Often they’ve heard a piece of music from the advert or the television,或者Often they hear---（you ）know---a piece of music from the advert or the television就好理解了.
另外,We get people who come in and whistle,a few notes of something they’re heard and,they expect us to know it.一句标点符号有些问题,另外,they're应该是they've.改过的句子是：
We get people who come in and whistle a few notes of something they’ve heard,and they expect us to know it.
说话时 heard可以和and连得很近,和they之间有短暂停顿,但写成书面语还是要注意规范问题.
整段的意思：
顾客是不是经常询问你们的意见?
是的,的确如此.经常出现的情况是,他们听到广告里或者电视上的一段音乐,他们不知道歌名,但是很想买这首歌的光盘.于是他们就来问你知不知道这首歌.我们经常越到这样的顾客,他们进来用口哨吹几句听过的歌,并指望我们知道这首歌.所以,我们经常要在顾客身上花很多时间.我们必须要有服务顾客的意识.

如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！

点此我要举报以上问答信息