AFRICA FASHION HOUSE IS THE WORST CUSTOMER SERVICE NIGHTMARE EVER

I ordered a dress. I paid additional fees because they charge more for bigger sizes. I went to their shop in Midrand to collect it on 23 August and the dress was really small (about 3 sizes smaller than I ordered). The lady there said it was the last one in stock so she would alter it and she called me on 25 August to say it's been altered. I then had car problems and called today (29 August) to ask if I can pay for shipping so the dress can be couriered to me because I live very far from Midrand. The lady on the phone is telling me she can't help me just because I don't remember the name of the lady who helped me when I came in to fit. Even though I gave her my name and order number. Honestly? She then said I should go on the website, type my order number and pay for shipping but there is no option to edit my order on your website. Can someone who is serious about your customers please help? I just need the dress to be couriered to me, I don't understand why this is so difficult.