It’s really pretty simple from your perspective. If he’s over the credit limit, you can’t sell him. If he’s under, you can. It should be pretty black and white. So, just don’t get into a conversation regarding the money. Refer it to your company’s financial and credit management.
The “three times more service than other customers” is really the issue. The real question is this: Is it wise for you to invest that much time in this customer?
The practical answer has to do with your own personal situation. If you have extra time and not a lot to do, and the time you invest in this customer is not time that you could be investing in someone else, then it is probably worth it. Better a difficult customer than no customer. Better some sales than no sales.
If, however, the time that you spend with this customer is time that you could be spending with other, more profitable customers ... CLICK HERE TO READ FULL ARTICLE.