I'm sorry to hear about that suears. Sounds like there are some pretty nasty clampers out there... Midway sounds to be one of the worst I've heard of.
I've also heard CPS to be a terrible company but not sure if they operate in that area...
Our local clampers sound nothing like the horrors that other areas seem to have, National Clamps sounds like angels compared. National Clamps wheel clamping only charge £80 for a release, nothing compared to £390 rising by £40 a day?!?!