Replacing the expiry date, isn't it *******???

On Sunday ( 27 September 2015) I went to Fournos in the Grove Mall. We bought a pasta sauce and cold meat, my fianc? checked the packing date which both said 27 -Sep-2015. When i got home the make the pasta sauce LUCKILY I smelled the sauce before using it, we then double checked the date as the sauce was COMPLETELY of, Fournos replaced the packing date sticker the original date was the 21-Sep-2015!! I didn't want to make a \scene"of this so the next day I went all the way back and spoke to the manager"