my phone went for repair

<p>I've sent my phone for repair to finite administrators as my phone was only damage the cover and the screen and now my phone's battery gets very low fast and before it never had that problem with the battery, to day I phoned the call centre and the consultant that helped me was not very helpful as he told me that I must go buy a new battery for my phone as they are busy debating money every month, all I want is my phones battery fixed that all as I have pictures on my phone that shows different batteries and it was taken with the my phone during the repair </p>