[Resolved]  Vodafone — signal of network

Previously the Vodafone coverage in the Domlur area was good. But from last 1 month it is very very poor. If I am inside my house I am out of network. But prior to one month the coverage was good. When I approached customer care for asking the reason came to know that there is some problem in some network equipment & they told that they cannot change it for the next 6 months. The behaviour was not polite and they simply wanted to ignore this issue somehow. Now I dont know how to proceed in this case. Changing the mobile number is a pain actually because this has to be changed in hell lot of places like bank, clients, etc etc. Can anyone suggest how to deal with this vodafone people?