This comes as the country joins the rest of the world to commemorate World Consumer Rights Day on 24 March this year.

CAMA Executive Director, John Kapito says the tendency of shop owners to change prices of commodities when a customer is on the counter has been rising lately despite his organization engaging the business community.

He has tipped consumers to challenge and return commodities when they realize a sudden price changes on the receipts.

"The responsibility to monitor the change in prices of commodities is with the consumer. People should express their rights when they feel violated by sellers. There is no need to accept everything you are given by the shop owners," said Kapito.

Public Relations Officer for Competitions and Fair-Trading Commission (CFTC), Innocent Herema says trader do this to mislead consumers and they always institute investigations as it is against the Competition and Fair Trading Commission Act.

"The Competition and Fair Trading Commission Act define those acts by shop owners as misleading. When we get a tip on that matters, we always conduct mystery shopping to get hold of such trader who are doing the malpractice," said Herema.

This year's commemorations were held in Mchinji district under the theme; Fair Digital Finance.