Pathetic service

Had to return a fresh cream for my grandmother. Pick N Pay brand fresh cream. Bought at Kenilworth centre PNP. On trying to return this product this morning. The security guard at the back entrance denied me access and proceeded to laugh and swear at me in Xhosa and shut the door in my face. The shop manager called to offer an apology but no refund or voucher for the disappointing service I got.