"No," he replies. "You gotta go back. You gotta take it off."
It's understood the incident occurred at the Bunnings Takanini store, and that the customer loaded the vehicle themselves and was alerted to the potential safety hazard by a staff member.
The staff member attempted to find the customer after he left the store to support him with the load, but was unable to locate him.
"The safety of our team and customers is our number one priority, and we have extensive training and guidelines in place to make sure everyone leaves our stores safely," said Bunnings New Zealand area manager Luke Foxley.
"Our team do their best to work with customers to make sure that loads are safe before they leave our stores.
"This includes materials handling training and resources for team, as well as assisting customers to split loads to make sure that they are a safe weight and safely secured, without excessive overhang."