today I received an email about an airfare sale. Sale was for certain dates. I have a previous reservation for one of the dates. I tried to change the reservation on line but did not get the sale price. I called southwest to inquire as to why the sale price was not the same as the price on the reservation screen. I was told that you have to enter the promo code to get the new fare. There was no way to enter a promo code on the change reservation screen. they said the only way to get the new fare was to cancel not change the reservation. By cancelling I would lose my early boarding fee $25 each. Great way to serve a customer.