Tempest Randburg Just Doesn't Give a **** About Owing Money!

I rented a vehicle from Tempest Car Hire in Randburg and returned the car in pristine condition on the 16th of April 2016. I was phoned by a staff member on the 22nd stating that my deposit to the amount of R 2700.00 and change would be paid in shortly. Today is the 4th of May and still - no money. The level of incompetence from the staff at both the branch and national call centre is shocking to say the least - they can barely string together a coherent sentence much less resolve a query. I have now spoken to three staff members at the branch and three different call centre agents. Can someone- anyone who has a modicum of training/intelligence please help me?!