Expired items delivered online

I ordered using the online services and the mayonnaise (C***** mayonnaise) has an extremely terrible smell, it's already expired am sure but the expiry date says otherwise outside. When i sent in a query one of the Agents at Pick n Pay Greenstone called me to promise me that he will send a driver to come pick up the products, that was last week already, till today no one has bothered to call nor follow up. Selling expired items in a big retail store like this is a concern. These should be taken back to the supplier for them to fix the problem before it gets out of hand. Please assist me resolve this as soon as possible. I still have your rotten mayonnaise, come fetch it