Kyalami Post Office: Watch out!

Kyalami Post Office: be sure to get a correct receipt printed on your vehicle licence renewal form. I paid R604 cash for my Corolla licence but zero indicated on the form. Queried this and told "system error." Demanded receipt - was given a receipt slip with the wrong vehicle reg. number. Demanded a correct receipt and was given one. Went home and checked fees online - should have been R504. Went back and asked for my R100 back. Was told to go to Traffic Dept. Insisted. Was given R100 out of the till. ****.