ACSA’s non disclosure

I recently parked at OR Tambo for a one day business trip. On return I was presented with a parking bill of R 1 770 for the day as I had parked on the second floor and which is supposedly a drop off zone. There is no signage on entry to indicate that this is in fact a drop off zone and that parking is charged at such exorbitant rates. Perhaps it is just another ACSA mechanism to try and dupe the public and recovery from their Covid disaster. Whatever the reason it is totally unacceptable