Gift Card refund (lost)

I bought a Gift card sometime in December 2017, I misplace the card and till slip (can’t find them). I went to Woolworth Southgate to report the lost card on 12 January 2018, and they called Gift card department to report. Using my store card and ID they were able to verify the Gift card and also retrieve copy of the slip, they were also able to cancel the gift card. Because I bought the gift card using my account, I expected them to credit my account which they said they can’t they will have to give me another gift card. But for them to give me a new gift card I must go to Police station and get an affidavit. Going to Police station to get an affidavit, I felt was an unnecessary inconvenience because I had with me all the things to prove my story i.e. my account store card, ID and the transaction was still on their system. After reasoning with the Gift card representative, she agreed to help me without the affidavit. She promised that I will receive a sms within a week and to come back to the store to get a new Gift card once I get the sms. Today (19 February 2018) it is over 5 weeks and I have not heard from Woolworth, when I went back to the same store this afternoon. They called gift card department and I talked to Nolisindiso Landlela and Kay Adams from who insisted that they cannot help without affidavit again. I am not happy that for over 5 weeks no one tried to contact me from Woolworth to give me feedback and also about unnecessary inconvenience to get affidavit when they have all the proof that I purchased the gift voucher with my store account card. Please help