Has anyone recovered funds from CAM Bank cuotas parcipitivas

It is now several years since I put my savings into this product which was being promoted as a savings scheme.
I never saw the money again.
I never had any correspondence from the bank, even when sabadell took over the bank.

I later discovered that the products were both illegal and fraudulent,, and had been bought by more than 50000
others.
Does anybody out there know of someone who was sold this product, and actually managed to recover their funds,
and how they did it.?
Regards
Jake