Sky and BT both have nice call centres in Bangalore too. I really wouldnt count on their service being better or anything special.
The £13.50 package on Sky is a huge waste of money look at the channels:
http://www.sky.com/ordersky/channelpackages/valuepack
I would prefer Analogue or Freeview and Top Up TV!
The Family Pack is the the first worthwhile package and that is £19.50
http://www.sky.com/ordersky/channelpackages/familypack