Disappointed Customer

Good day I bought nappies for my grandson and gave it to my daughter she than informed that the nappies was leaking and she had to constantly change the child's nappy every 20 minutes I reported it to Huggies they said they will reward me with the same amount that I paid for the nappies mind you I paid R289 for the nappies and they send me a voucher of R110 where will I pay that price for a bag of 94 nappies m