An issue with debit cards from Friday remained unresolved Monday at several MARTA stations, and transit officials urged customers to plan ahead.

Debit cards will not function at Breeze Card vending machines at seven MARTA stations until further notice due to a system upgrade, the transit system said.

Customers can continue to use credit cards and cash.

The seven stations are North Springs, Dunwoody, Sandy Springs, Medical Center, Brookhaven, Lindbergh and Georgia State.

It's business as usual at all other stations and RideStores.

Call 404-848-5000 or visit www.itsmarta.com for more information.

Staff Writer J. Scott Trubey contributed to this story.