Tempest Port Elizabeth useless

We always hire cars from Tempest and have never had a problem, BUT the Port Elizabeth branch is useless. Car was returned on a Sunday at OR Tambo as arranged. After phoning OR Tambo and enquiring there I was told to contact the PE branch. It has now been a week and still no deposit refunded. The PE branchs phone just rings and then gets disconnected. I have tried numerous times. Are they hanging up and just dont care? Usually the deposit is returned in 2 days time. PLEASE SORT THIS OUT ASAP!!.