这种情况　怎么回复．

我们是一家小作坊，从家纺慢慢在再转型到服装类产品，但是我们出去的样品尺寸老是稍有点偏差， 如现在这个订单，产品是裤子，很简单的，腰部是橡筋线．寄出两次样品，第二次产前样，除了自然状态下的腰头尺寸稍有偏大，拉伸后的腰头尺寸有偏大，其实尺寸基本没问题 而且客人之前也有说过，允许有一定的误差范围；现在客人说 I cannot really understand why you cannot do as the specs, because the other suppliers are doing. Does your company he a system of inspection to assure the quality to the customers? Please let us know . We wanted to send your size samples to the client, to get the final confirmation by the end of this month. However, because of??the wrong size samples, we cannot show them . So it's the reason we cannot issue the final PO yet. We are seeking an alternative way to get things right without your samples, because we cannot waist the??time waiting another set of samples 样品我们也确实是尽力了的，但只能到这种程度．请问这要怎么回复．求指点，急　谢谢