The incident was among "abysmal failures" of care by a council contractor, an investigation finds.
The industry watchdog finds that Gain Healthcare Ltd, based in Bicester, is in breach of seven legal regulations.
Research carried out by Healthwatch Cornwall was based on the views of 175 care workers.
Age UK Doncaster was given the rating following a recent Care Quality Commission inspection.
Home care workers must be paid for their mileage and travel time, a Sheffield-based carer says.
The Care Quality Commission downgrades an at-home care provider from good to inadequate.
Hospital bosses have been asked to review its proposals to shut Bridlington Care Unit.
Care Staff Services, based in Slough, Berkshire, is to close after it was rated inadequate in the autumn.
With councils under growing financial strain, we explore two alternative care models.
