Thrifty Car rental is pathetic - their customer care is appalling

I rented a car from the Cape Town airport branch and returned it on the 20th March. I have been requesting a release of my holding deposit for the past 2 months. Thrifty car rental stuff's gross incompetence is appalling and their inefficient systems do not complement their staff either. I have been calling them and sending emails, being sent from pillar to post by several disgruntled employees.

The vehicle was returned on the 20th of March, with full tank. It is now 13th May and still no responce from this pathetic company except the automated responses acknowledging the receipt of my emails. Calling their call centre doesn't help either. Whoever picks up the phone directs you to the "holding deposit" and you run around in circles with an answering machine that doesn't go through to any of the options.