The best way to do business with a liar is confront them with the truth. Tell them that you do business as a partner. If your lying customer still can't see the light, tell him that you may not be the best choice for business, and that you think you have someone that can serve him better. Then, refer him to the competitor that you hate the most.
Jeffrey GitomerIt seems to me that it's actually harder to invent excuses than it is to get a sale.
Jeffrey GitomerThere is no prize in sales for second place. It's win or nothing. The masters know this and strive for - they fight for - that winning edge.
Jeffrey Gitomer