False Promises - Poor Service

I have complained about the poor service and false promises made regarding my purchase of Kia Picanto. The crux of the matter is that their were not full disclosure from the sales person at WBC Mbombela (Nelspruit). After highlighting this I was instructed by your customer care agent Charleston Ruiters that I must supply quotations for minor repairs and a service that were not done., after supplying this it all went silent ......and then suddenly after my persistent calling I was informed that a proof of service is available although the service book does not reflect this...how can I trust this? My purchased warranty is null and void as I do not have proof of this service after I was promised that this will be forwarded and that it is all above board! Now another week has lapsed with no communication from WBC. The situation is going from bad to worse.