not refund deposit for car rental and double paid

A prepaid booking for car rental was made through [URL Removed] ref no. *** on 6 February 2015, in name of MI Chan Yan. Payment was deducted from the credit card and a further amount At OR Tambo Mrs Chan Yan went to Hertz to collect the vehicle, and was charged an additional R5679.98 deposit - Tax invoice no ***1-6. The car was returned on time as arranged. The deposit was not refunded.<br> A previous email was sent by Mrs Chan Yan and the matter was never resolved.<br> The claimant is Mrs MI Chan Yan and the particulars hereunder are hers