Hollow bread

I bought brown bread on 24-08-2024 at PnP Dooringkloof. Some of the cut slices inside the bread, did not have a middle, but only a crust. This means that some places, the bread was hollow inside. This leaves much to be desired, about Sasko's quality control. How do I take a bread back to the outlet, to give them proof of what I am saying. What are the chances of taking a bread off the shelf, that has the same problem? Chances are that I will not easily find another bread like the one I got.