While I personally wouldn't do an HBAC, I'm sorry for the situation you find yourself in. It's frustrating how options for VBAC can be so limited. Do you know if the hospitals in your area have a VBAC ban, or is it just the individual providers you've run in to?
I'm (very, very) hesitant to suggest this, but perhaps you could go to the hospital while in labor, and not tell them that you're a VBAC unless something comes up and they need to know? The reason I'm so hesitant to suggest it is because if your uterus ruptures (a rare complication, but possible), moments matter and they'd need to act immediately (and they'd need to know that's what's happening).
It's for that same reason that I wouldn't want to do an HBAC myself, and why I'd recommend against it. While the chance of uterus rupture is small, it's still possible, and it would be bad to be at home while it happened.
The three other options I can think of are: 1. Go to the hospital once you're in labor, let them know that you've had a c-section, tell them you want a TOL and refuse another c-section. 2. Go with one of the care providers you've already talked to, and schedule a repeat c-section. Or 3. Continue looking for other care providers.
Again, I'm sorry for the situation you find yourself in.