I would say a full refund isn't that bad. Then you have had your phone for free for 6 months. And even more important: you can buy a phone from another maker that won't cheat you, won't sell you a faulty device and offers a proper service. What more could you wish?
I was using a galaxy note 5 since march 2016. All of a sudden after using for 6 months there appeared some pink spots on the screen. Immediately I went to the service centre and the service centre said that we will replace the screen. I was told the maximum time would be 3 to 4 days. So after waiting for 4 days then started the problems from Samsung. First they said that they will replace the screen and they are waiting for the part. After 10 days they said that we cannot find the part so we will replace your phone and after 15 days we cannot either find a phone (this is the strange part) so we will replace your phone with S7 edge and we will also provide the difference amount. I asked them twice if it is Samsung that is going to provide me some amount or should I pay the difference amount. The executive confidently said it is Samsung, you dont have to pay anything. At the end another executive called and said that we cannot replace your phone with S7 edge and the only last option is refund. Then I asked it should be full refund, then he said we will maximum try sir but cannot assure. I am really fed up with the kind of response the samsung executives give every day and in the next minute or rather next day they will change their decisions. I feel completely cheated by Samsung by selling me a faulty device and not offering a proper service. Samsung is already making a mess of things with the all new Note 7. I think Samsung no more is making quality products and no more offering the service. Please be aware of this kind of issue before buying the product.