Dell XPS 15 (9550) swollen battery

I have had a problem with a swollen battery on my Dell XPS 15 (9550). The battery swells as it fills with gas. This swollen battery pushes the trackpad up 3 or 4 mm beyond the case (see photo). The trackpad then stops working. Dell advised me to stop using the laptop and remove power from it. For safety I have removed the battery until a replacement is received. See video below

https://youtu.be/fuM-Cdv3nlk