Sorry, I must be missing something.
Surely the legal argument is:
- You signed a contract which you read.
- You now want to vary the terms.
- The other side won't agree to that.
In which case, absent them accepting a compassionate grounds argument, to them its just a sob-story, even if its actually true.
Sadly, they're running a business, and it's not like they'll be getting any future business.
Start a petition. That might work.