Coles, Woolworths and some IGA stores have begun to introduce early morning shopping exclusively for elderly and disadvantaged shoppers, which Mr Banducci admitted got off to a rocky start on Tuesday as many shoppers were unable to find the goods they wanted. "We learned a lot in the course of yesterday and then we did adjust today, and I would hope tomorrow and Friday will be better yet again," he said. Woolworths, Coles, Aldi and Metcash executives have had a number of joint calls with government to provide updates on supply chains, which Mr Marshall said were holding up "very well" given the massive increase in demand. "We're having in excess of Christmas volumes every day without planning, so the supply chain is working very well considering," he said. He called for "consistent strong messaging" from both retailers and government to ensure that Australians were aware retailers have "worst-case scenario" plans in place, and that stores would "trade through any scenario".