Probably WHF.
I'm 48 now and I've got no money problems but I got in a terrible mess many years ago in my late teens and early twenties - CCJs, bailiffs on my Mum's door etc. I found the banks can do anything they liked. At the end of the day, they feel you've spent their money that you weren't entitled to take so they can take whatever they like from you to recover that money. That's what was explained to me many years ago and I shouldn't think they've changed.
I hope you keep your *** up WHF. I couldn't see an end to my problems but things did get better. The help the bank are offering you will get you straight. As I said, I'm 48 and I was eventually successful in business but I learned years in those years to live in a cash world and I still do. I only buy things with cash and I only keep cards for an emergency (although I have to use them now to buy on-line).
Good luck. Although you might think there's no end, things will eventually get better for you.