defarmation of character

I went to president hyper krugesdorp, I bought toilet paper and an exercise book then proceed to dischem to by nan for my baby, my colleague whom I was with had forgotten to buy cornflakes then she had to go back to president hyper, because she had a trolley with groceries and I was pushing my babies pram l went and sat at president hyper bench and my colleague proceeded to inside president hyper to buy cornflakes, when she came back we sat a while cause we were waiting for transport to come and fetch , when we got about to go the other lady approached me snf said why didn't I pay for the nan, I have never been so embarrassed in my life like that, and then I asked her what did she meant I didn't pay for the nan I bought at dischem, don't think I ever set my foot at krugesdorp president hyper.