Wells is losing as much as $10 million every month on the program as savvy customers flock to the card, according to current and former employees. Executives made internal projections on key revenue drivers, such as the likelihood that cardholders would carry balances, that turned out to be inaccurate.... The financial losses triggered a renegotiation of the program that has been under way for months. Wells has told Bilt that it doesn’t intend to renew the contract, which is scheduled to end in 2029, unless economics are changed in its favor....A Bilt spokesman said that The Wall Street Journal’s reporting “is an inaccurate representation” of the partnership and that the company is “committed to a long term partnership with Wells Fargo that benefits all parties.”