New connection offer on Airtel Digital TV by Amazon

You have already got the answer from Airtel customer care about you are not getting money back for your old used materials. Whatever purchased newly, it is fully charged by the company. That's all. You should have asked them to use your old devices before buying new devices. Also, you should clear all your doubts from the customer care executive before buying new devices. Once new material is sold by any electronic company with particular price, they will deduct the cost from the actual prices based on request received from customers after the deal is over. So I think you paid what is for new devices and new plans and you did not get any discount for your old working devices and due to that you are feeling that you paid more. It is fact that there is no value for old devices in the shops from where we are buying new parts. People will always convince you to throw your old material and go with their new products.