No refund of R14,000 deposit from Avis for 45 days!

Terrible experience at Avis Ladysmith. I was told that the deposit of R14,000 I paid would be refunded within 30 days when I booked on the 3rd of September. It’s now the 18th of October and I have called twice and been told about the “head office”. I was told I would be cc’d in an email last week and no email was sent. I called again yesterday and was cc’d in an email but there is still no response! This is a horrible way to treat customers and still not communicate or give a reason! I have rented cars from many rental companies and have received my refund on time!