Service required for Sony Digital Camera

Location/place: Chennai

Name of company/service: Areva T&D India Ltd

Dear Sir/Madam
We have purchased two numbers of sony digital camera DSC S930 back in 2009 for our company usage.
Now one of the camera has got problem with the display. when the photo taken is downloaded to PC it is looking great, but the display has got the problem, an white screen appears while switching it on and taking the photo.
i have got the customer care number in internet as 044-28292211. But no one is answering my phone call. Kindly get me the correct phone number of the service center here in chennai