<human>: Could you distill the essence of the text into 1-3 sentences?

Ok so this happened yesterday (*gasp*).

I was at the Southbank centre yesterday, one of my siblings had a graduation there. After the ceremony ended my sibling decided to go out with his friends, which I didn't mind, but meant I had to go home by myself. What made matters worst was that I got a call from my mum, meaning I had to get home pretty fast. Unfortunately I live near Barking, which is on the outskirts of London (kind of) if any of you guys know the London Underground train map. Also getting to where I live from Southbank meant I had to go to Waterloo Stn, switch at Bank and take the District Line home. Now here's the fuckup:

I got off at Bank and then proceeded to follow the signs which point to where the District Line platform is. Fast forward like 15 minutes, I'm still following the signs in an underground station which is really hot and dehydration is taking effect on me (Note that I had no water and money on me, so I had no way of getting water). By the time I actually reach the platform I'm literally moments from collapsing from dehydration when the train arrives. I board the packed train and I had to endure the rest of the ride home, which is like 10 stops or so. One of the most worrying situations I've been in.
<bot>: Rushed to get home without considering the distance from Waterloo line to District line at Bank. Almost collapsed at Train Station.