Turn around time process for lost gift card

So I bought a gift card beginning of the year and loaded cash monthly so that I can use it for festive season. On the 16th November I went to shop with it and I was left with some balance. I then realized that I lost my card. I went to Makro today to report. Luckily I had the slip which they had emailed and it had a card number. The lady who assisted me had so much patience and she was very helpful and friendly. My issue now is with the process of getting the new card. I am told that I might get it latest in 3 weeks time. That's the entire December and it defeats the purpose for my savings. I have the card stored in one of my app as most stores u can just scan the barcode from ur cellphone. I'm so disappointed as I have been looking forward to continue saving with makro but this process is inconvenient for me. I left all my details there and hope and pray I will receive it in as soon as possible as I want to buy things for kids since they on holidays.