No Refund

Vodacom deducted a double premium in December. I called the call centre early January and was informed that it was a fault on their side and that there will be a credit on my account and that no premium will be deducted in January 2016.<br> But Vodacom debited a double premium again. I went to Vodacom in Middelburg Mall Mpumalanga on 8 January 2016. I got a reference S3-gjg2K-kQfab and an sms stating that they will contact me regarding my status within 2 days. I got no feedback till this day. I called this morning (13 January) and no one can help me. I urgently need the money Vodacom owes me.