Essex Police are appealing for witnesses to come forward following a robbery on Long Riding, Basildon, on Sunday 22 December.
At around 9pm a man in his 60s had his bank cards stolen and was left with broken ribs and a black eye following an assault.
Essex Police are keen to speak to a woman who was driving a blue car and stopped to assist the victim, as well as a man from a nearby flat who came to help.
The bank cards were later used at several shops in Timberlog Lane, including the Post Office, The Food Shop and Off Licence.
No arrests have been made.
Anyone with information about this incident, dashcam, or CCTV that covers near the Hockley Road junction, is asked to call Basildon CID on 101 quoting crime reference number 42/202203/19.
Information can also be given completely anonymously to independent charity Crimestoppers by calling 0800 555 111 or visiting crimestoppers-uk.org.