VUMA Fibre Refund

My heart is broken. I wrote a review and was told that my question would be answered, but I only got half of my money back. I'm really upset because I need my money back. Please take care of this, Vodacom. I've called the Fibre contact center many times and no one will help me. I need the other half of my refund because the installation didn't work. My reference number is INC0H*** (2-1924SJZM).