By NEIL HARTNELL

Tribune Business Editor

THE SUPERVALUE supermarket chain saw a more than 20 per cent year-over-year increase in its Christmas sales figures, its owner and president telling Tribune Business yesterday the company was likely to invest a further $500,000 on store upgrades during the 2012 first quarter.

Rupert Roberts said the Yuletide holiday top-line "could have done 10 per cent better" had it not been for customer service problems caused by hiring additional staff late in 2011 to cope with the holiday rush.

He added that Supervalue had invested some $1 million since last summer in upgrades across the 11 store chain, focusing on providing more check-out aisles and ca ...

Click here to read more at The Tribune