Walmart and Branch Messenger, a payments platform, accused of deceiving workers about pay from retailer for two years.

The U.S. consumer finance watchdog accused Walmart and the workforce payments company Branch Messenger on Monday of forcing more than a million delivery drivers into using accounts that cost them more than $10 million in junk fees.

Walmart and a financial tech company are being sued over allegations the retail giant forced drivers to use costly, complicated deposit accounts in order to get paid and raked-in millions in the process.