bad customer service

I called Telkom in November applying for a phone contract deal and it was successful, they debited money from my account before they deliver my device. I waited 10 days after the debit as they instructed me. On the 11th day (09/12/2015) I called them enquiring about the delivery, they told me that they were out of stock and they will refund me. I waited 14 days as I was told, on the 15th day I called them regarding with my refund and they kept on telling me that someone will call me back, till this day no refund, no one called me.