Terrible standards and inability to repair

Kia Picanto sent to Kia Northcliff for repairs after ABS light came on in Jan 2015. 1st got told nothing is wrong with vehicle i should just ignore the light as it is obviously faulty! Today went back for the same thing for the 5th time now since Jan 2015. On 4th attempt at repair a new sensor was installed, which did not fix the problem. This morning when dropping car off for 5th time, get given an invoice for the sensor! Fault has yet to be fixed but being charged for stuff! Then get given a courtesy vehicle after I threw my toys and insisted they keep my car till its fixed. Courtesy vehicle, and I use that term loosely, has a 45cm crack running down centre of windscreen, smells of smoke and sweat inside, has an empty deodarant can lying round and hasnt seen a wash for a while! Service manager (Deon) didnt even blush or apologise for the state of the vehicle! Clearly this is the standard accepted by the dealer principal and Kia NORTHCLIFF! The warranty manager (Sharaaz) has been MIA since this whole debacle started and I am yet to actually see this person nevermind get any sort of customer service from him! I wonder if anybody at KIA NORTHCLIFF will even bother with a response...