lorax - 11:54 am on Oct 21, 2010 (gmt 0)
I agree with Staffa. This is a case where it's NOT the customer's problem. If you made the mistake, then you need to make it right if you want to keep a customer and your reputation. Your worried about the money you'll lose - I understand this. But a bad reputation will cost you far more in the long run. At least call the customer and explain the situation and see if you can work it out favorably for both of you.