Air Tel Mobile Services
Very weak signal received in my house

I have been using 2 connections 9987899449 and 9004399449 since 2008 but since last 6 months there is very weak signal and some places no signal in my house, after repeated complaints to customer care there is absolutely no response all other service providers signals are perfect, so its embarrassing to see friends coming to my house having other service providers speak when sitting in the house were as when i have to use my cell phone have to run to the window and showoff my mobile to neighborhood