Airtel — airtel worst family plan porting

Website:

www.airtel.in

Hi i took airtel family plan by porting 5 mobile numbers of my family members to have better network at a reasonable price option a month back. Initially it took me more than 15 days for the porting process with every second day the airtel people would come to my place for some or other issues related to porting at their end, they even charged me 300 rs per number as porting charges for which till now i haven't received any receipt also.
To add to this problem airtel porting option is so pathetic that their systems were never updated with what's happening with our mobile numbers and would call for all stupid queries.
Once the numbers got [ported the disaster started happening there was no network on either of the number to even make calls so forget about internet and any other service. The network of the airtel was never available when you needed the most.
For this issue i made complaints to customer care everyday but till today no one from airtel bother to call and resolve my issue neither thay have done anything about it.
Now i have to wait for 3 months to pass to port back my number from airtel. Its a big request to airtel to stop making wrong and false advertisements on the television promising 20 things when you cant even provide basic service of making calls from your network. (I have to buy one more number from a different service provider to start my calls and internet services)
After using no network from airtel they send me a bill of rs.1150/-against my no network usage.
Is airtel gone pay for my the new number which i took from other service provider?? Why should i pay for the services which i never used?? Does anyone bother from airtel to resolve this matter??
Request to everyone who are planning to port their numbers to airtel... Dont do it!!!
Worst network... Worst service provider... Need to be sued for mental harassment.