Cash Refund

I went to Ackermans in Mall of Africa on the 3rd of January 2020 between 7pm - 7:45pm and purchased a jacket for my daughter, the cashier did not remove the tag that beeps at the door and i only realized when i got home. On the next morning in less than 24 hours i went back to the store to ask for a refund as my daughter went back home early hours and could not take the jacket with, i was told by the manager i can not get my money back as i do not have the receipt. I bought cash and want my cash back, this is ridiculous as Ackermans can easily retrieve my docket from their POS or go through their cameras if they don't believe me and assist! He told me he can retrieve the docket and reprint it for me but cannot give me cash back. I called customer care to try and resolve this internally however they were not interested in assisting me. I do not intend to shop at Ackermans anymore!