Lack of service delivery

A Vodacom consultant refused to help me today on the Vodabucks customer care line. I said to her i didn't receive my Nandos vouchers that I bought with Vodabucks. She said unfortunately the voucher expired. I said but i didn't receive it. She said to me we cannot assist. She asked me why didn't you call within 5days. I said to her, when you dial 082135,there's no option to speak to an agent, even Tobi can't assist with Vodabucks. She didn’t want to listen. I even said to her, the number for Vodabucks customer is not advertised anywhere even on the Vodacom app, you can't find it. I've been struggling for a month to speak to Vodabucks customer care. She still refused to assist. Therefore I lost Vodabucks on two numbers and I did even receive vouchers.