Holding deposit withheld for no reason

My awful experience began upon collection when certain fees were not mentioned upon my booking, however I let that to rest and paid. I was charged R4000 deposit which I was informed it will be refunded within 72 hours back into my credit card.

The car was returned on the 29th of October, and almost two weeks later my refund has not been released. I have made numerous calls and empty promises is all that I have been getting. This is now gotten to a point where I will only go straight to social media if I don’t get my refund tomorrow. Worse rental company I’ve ever had to deal with.