您建议怎么赔偿？
What remedy would you suggest?

For example:
A: What remedy would you suggest?您建议怎么赔偿？
B: You should either substitute the machine or offer us a credit.
你们要么给换货要么退钱。
remedy ( n.)赔偿

很遗憾通知你,我从贵处购买的机床操作不灵。
I' m sorry to tell you that the machine tools I purchased from you do not work well.

For example:
A: I'm sorry to tell you that the machine tools I purchased from you do not work well.
很遗憾通知你，我从贵处购买的机床操作不灵。
B: I understand. I'll send a specialist over immediately.
我了解。我会立刻派专家过去。

那不是很具体的答复。
That's not a very concrete answer.

For example:
A: We'll deal with it as soon as we find the source of the problem.
我们一旦找出问题的出处，就会处理的。
B: That's not a very concrete answer.那不是很具体的答复。
concrete (adj.)具体的

你们会全额赔偿，不是吗？
You'll compensate fully, won't you?

For example:
A: You'll compensate fully, won't you?你们会全额赔偿，不是吗？
B: Certainly. It was our mistake.当然。这是我们的错。

上个月收到的货我们不满意。
We are unhappy with the consignment we received last month.

For example:
A: We are unhappy with the consignment we received last month.
上个月收到的货我们不满意。
B: I'm very sorry to hear that. We seldom get any complaints about our products or services.
很遗憾你这么说。我们很少碰到产品或服务不满的情况。

我们不能退钱给您，因为您已经用过了。
We can't give your money back because it has been used.

For example:
A: We can't give your money back because it has been used.
我们不能退钱给您，因为您已经用过了。
B: Then, can I exchange this one for another one?
那么，我可以换另外一个吗？

很遗憾通知你方，你们发来的货不令人满意。
We regret to inform you that the goods forwarded to us are in unsatisfactory state.
unsatisfactory(adj.)令人不满意的

很抱歉我们不能接受你方的索赔。
We regret our inability to accept your claim.
inability(n.)不能

我们只得将这批次货退还给你们,你们须支付相应的费用。
We have to return the defective goods to you for replacement at your expense.

For example:
A: We have to return the defective goods to you for replacement at your expense.
我们只得将这批次货退还给你们，你们须支付相应的费用。
B: In spirit of good-will and friendship, we agree to accept all your claims.
本着诚意和友好精神，同意接受你方的全部索赔。
defective(adj.)有缺陷的

因为我们对你们的公正充满信心，我们留给你提出解决方法的机会。
We leave it to you to suggest a solution and we have full confidence in your fairness.

For example:
A: We leave it to you to suggest a solution and we have full confidence in your fairness.
因为我们对你们的公正充满信心，我们留给你提出解决方法的机会。
B: We are very much regret having given you the cause to complaint and assure you that we should do all we can to put matters right.
我们很遗憾致使你方提出索赔，我们保证将尽一切努力改正