Taken advantage of!!

Earlier this year I took my car in for a major service at S & S Services in Uitenhage. About 4 weeks later my service light came on. I went back to the service provider and reported this problem and one gentleman was asked to looked at the car for me. He then came back to me and told me that they can't switch the light off and they said I should take it elsewhere to get this done. Initially I had asked if they were able and had the resources to service my car and they told me that they could and that they service all car makes. Therefore I don't understand how they could make this promise if they weren't going to be able to do a simple thing such as switch off a service light. I have since taken my car to Maritime Motors to get this problem sorted however they charged me R850 for an assessment and they further required more money to switch the light off, which I couldn't afford. I would like S&S Services to compansate me for the money I wasted on that assessment as well as sort out my service light. Or I will be taking this up with RMI. I feel that the motor industry is always taking advantage of female customers and this must stop.