Quite simply, it's a case of suck it up or move house, you're not alone. With that said...
I'm on Infinity. Which is all well and good - for me. But the people I support are often in situations like you describe.
What annoys me is that BT are keen to "improve" Infinity instead of fix rural blackspots! I appreciate that if the infrastructure is in place, going from 20Mb to 200Mb is probably just a flick of the switch. I also appreciate that a heap of people paying for Infinity1/2/3/4/5/X will probably fund the improvements required in rural areas.
But don't leave the sheep without broadband!