(The Center Square) – Wisconsin’s attorney general is joining a lawsuit against Dollar General.

Attorney General Josh Kaul the state is joining 19 others in suing Dollar General over deceptive pricing allegations.

“The prices that folks see displayed when they’re shopping should be the same as the prices they’re charged when they check out,” Kaul said in a statement. “If the prices charged in the checkout aisle are higher than the prices on the shelves, there should be accountability.”

Kaul and the other AGs claim Dollar General took advantage of customers with “millions of dollars in unlawful overcharges" and had "insufficient safeguards" to protect customers from being charged more.

The lawsuit claims that "Dollar General received tens of thousands of consumer complaints stating that the company did not honor the advertised price," and that "despite being made aware of the problem, Dollar General has failed to implement policies and practices to adequately address it."

The state AG's as well as the Federal Trade Commission said Dollar General has faced deceptive pricing complaints for years.

“Wisconsin takes price accuracy seriously,” Wisconsin DATCP Secretary Randy Romanski added. “The DATCP Bureau of Weights and Measures conducts hundreds of thousands of inspections each year to protect Wisconsin consumers because consumers should be able to trust that the prices advertised to them are accurate as it is among the most basic and essential protections consumers have.”

Dollar General has not yet commented on the allegations.