Urgent: 8 month old phone severely compromised

I bought a Samsung Galaxy Trend Plus phone from Vodacom in the Helderberg area barely 8 months ago. Lately I noticed that the battery seems to drain exceptionally quickly, often from 50% to completely dead within less than an hour. Then I noticed that the battery has swollen. I learnt that this seems to be an issue with Samsung phones.<br> <br> I travel a lot and need sufficient battery power to ensure my safety, and the rate of depletion on this battery is simply ridiculous. And I believe that the battery, swollen as it is, might pose risks to the health of my device, if not my person. It is utterly unacceptable for a device to be so thoroughly compromised when it is less than a year old and has been looked after. I hold Samsung responsible for this faulty component.<br> <br> Samsung, please tend to this urgently.