Videocon — charging customer to enable english language for kids channel

Sir,
Myself biju, staying near parappana agrahara in electronic city, bangalore would like to lodge a complaint against videocon dth for charging the customers. I have faced a problem of not able to change the language of some of the kids channels from their menu options. I called the customer care and told my grievance. They told to try some options and i was not able to get it done even after trying whatever solutions they recommended. Then they told that they are going to take a request and service person will visit my home and i have to pay him 200 rs service charge. My question is that why i need to pay a service charge for the issues occurred from their side. They charge unnecessarily for every service person visit. I would like to know whether any rule or amendment is there to stop taking money from the customer for this kind of issues occuring from the service provider side.

Thank you