When did you file complaint with the BBB on Midland?
They will respond, but take the full 30 days or near.
They are a BBB accredited business, if they don't respond, they lose their accredation.
Have you checked to see if your state requires CA to be licensed and/or bonded? If so, are they?
Have you filed complaints with the FTC or AG?
Personally, I'd wait for Midland to respond to the BBB before doing anything further with them.