A staff member spoken to this week, who wished to remain anonymous, said mobility scooter users had been noticed turning up to do their shopping with New World baskets.
The staff member said when customers were asked to place the baskets beside the counter when finished, they would become defensive or upset.
"They become really aggro and say they are just taking it to the car. One day I was coming to work and I saw a guy washing his windows - using a Pak'nSave basket to hold the products in."
A spokesman from Melody's New World in Broadway Ave said the odd basket had gone missing, but were unsure of the numbers.
"It's not a noticeable issue."