Dishonest service

I brought my vehicle in for my alternator belt which kept shredding and was informed that I needed to change the clutch pulley on the alternator. I did inform the service adviser which was Ricardo that I had a motorite policy. He straight away informed me that it wasn't covered without even looking at my warranty book. I took his word for it because I assumed he knows from experience. I had paid for the work done which cost almost R3500 for parts and labour. When I eventually contacted Motorite to query what was covered, they informed me that the pulley is covered but they cannot do anything about it cause there was no claim done. In a different incident I asked Ricardo (VW) about the cam belt change which he quoted R11500, but another VW in Durban did the same job at R8500 which is R3000 cheaper. Alpine VW claims that the R50 fee to drop a person off is charged because their cost on service and parts are cheap (this story comes from the sales adviser), it seems you guys are more expensive than other dealers. In 4 years I had purchased 4 new vehicles from Alpine however due to your guys being dishonest, there is no point in ever doing business with you in future.