Service centre of Panasonic in Mumbai

Please note that when I went through the website of Panasonic India, I found a Godrej & Boyce number (When i called them they had no idea that they were associated with Panasonic Plasmas..!!!!)....??? and one VISUAL TECHNOLOGIES in Jogeshwari (W) - (did not call them though).......so are there only 2 service centres in Mumbai...???(see link... http://panasonic.co.in/web/Contents/...sp?ContId=1220)

And the Where-to-buy section for Mumbai had the Godrej & Boyce location and not surprisingly when I called them........they had no idea they had an association with Panasonic...!!
see link below... http://panasonic.co.in/web/Contents/...sp?ContId=1062

Regarding Burn-in problem of Plasma TV, I have a question - I use Tata Sky for TV and there is a LOGO of Tata sky at the bottom right of the screen which appears in all the channels.......does that mean when I view the TV (different channels) for say more than 5 hours continuously(it happens on holidays) , is it a risk of causing a burn-in...?