Airtel — negligence, false commitment, data packet loss

Before I do port from Karnataka Airtel to TamilNadu Airtel, I had 180 Data pack with me. when contact customer care to clarify the data pack transfer, they said there will not be any lose, it will carry forward since you are taking Airtel post paid service only. Because of their confirmation, I did the Port from Karnataka Airtel to Tamilnadu Airtel. Then I came to know that, that it is wrong commitment they have provide to me. I lost all my data. (its 180 GB data worth of Rs 1180). I Called up customer care again to get this pack. As per their statement, they don't have authority to provide, they asked me to check with nodalofficer team. I wrote many mails to noalofficer team tamilnadu, but there is no such respond from them. So I waited for some time and I have given the option that shall I do subscribe Booster pack for 180GB so that they can do waiver off in billing cycle. There is no objection from them and no respond for my proposal too. After few days time, I opted for Booster pack. As per Airtel's plan, custemer can do subscribe Max 90GB per Month. so its subscribed for 2 months and informed to Nodalofficer immediatly to waiveoff via mail. Again there is no respond. And bill has generated with the boosterpack, then after so many followups, Team has waived off for Aug month bill ( Rs 590, ie.90GB). I keep inform them for the Sept month bill too waive off since Aug Month but there is no response from Airtel again. Now Sept Month bill has generated for the remaining 90 GB (Rs 590). I have requested again to waive off but team Nodal officer is not responding at all till today in the morning. And I have been forcing to pay the bill for this pack. ( Anyway I already paid for the regular plan).
When i Called up Nodal office team via phone, they agree to waive off but due to their system process, its not possible to wavie off for next 3 months itseems. And they are not ready to do any compensation for this loss.
My question to Airtel team:
1. Because of Airtel Team's Mistake ( Agreed by them: having recording call with me and with them too) why customer has to bear the loss?
2. Why Custemer's mails are not responded since 14th sept to till today in the morning? though I escalated many times to Customer care team and nodaloffcier phone team.
3. is Customer's request are least bother?
4. How you are going to compensate if you are not able to waive off because of your system restriction?

To know this issue, please refer SR Number ending with 686969.

regards,
Senthil