Last year we found well out of date product - the entire stock of that product - 10s of units. We advised a stocker. Next week it was all still there. Advised the customer service desk. Next week it was still there.Then ‘asked’ about it on their facebook page (eg publicly) Next week it was gone and replaced with current dated product.
edit: had it backwards - now corrected, although it was only 1% difference either way.
In the ‘best grocer’ I noted Woolies beat Coles for fresh produce, but locally the reverse is usually true. Seems there can also be national variation based on where they have more shops, eg in FNQ it can be quite a different experience than in suburban Melbourne re distribution systems.