Given Pick n pay too many chances!

I order my groceries with you every month, whatever store accepted my order and didn’t even do anything after accepting. I have no option to cancel the order but I have called your call Center to cancel and after 15 minutes waiting to speak to someone, I finally do and request to cancel but when I log onto that App to deregister and delete the app, the order still pending! Please making sure you cancel and refund me ASAP!! Order number ***!! Please cancel it