Money not returned

On the 6th of Jan 2015 booked a car where R1900, was reserved. On the 9th R742.00 was deducted again on my account. I was promised that R1900 will be deposited back on the 12th. Up until today that money has not been deposited even thou I complete forms to release this amount. When I call they promise to sort it out and even now not sorted.