向老外催款

向老外催款是一个比较棘手的问题，以下是一些建议供您参考：

1. 确认欠款：确定确实存在欠款，确保您对订单和付款条款的理解与客户一致，确认所欠款项的具体数额以及付款期限。

2. 以邮件形式再次提醒：在电话催款之前，先以邮件方式再次提醒客户欠款。邮件应该友好、清晰、直接地表达您期望客户及时付款的期待。

3. 电话催款：在电话催款时，您可以使用一些常见的英语句子，例如：

- Can I ask when we can expect payment for the outstanding invoice?
- I’m calling to follow up on the overdue payment for the order from 2011.
- We notice there is still an outstanding balance of XX on the invoice, can you provide a timeline when we can expect payment?
- We deeply value our business relationship with you, but as you know this balance is overdue, can we make arrangements for payment as soon as possible?

4. 寻求法律支持：如果客户在很长一段时间内都没有回复您的邮件或电话，并且拒绝付款，您可能需要寻求法律支持和咨询。