An agreement between Hall County and its cities that delineates the delivery of services to its residents to avoid duplication of services and waste public funds — as required by Georgia law — has been returned to the parties for revision. The state Department of Community Affairs told The Times this week that the Service Delivery Strategy document submitted by Hall County on June 29 has been returned to the county. “We rejected the Hall County SDS on Friday,” said MaryBrown Sandys, a spokeswoman for the Department of Community Affairs.