Still waiting for payment from Express-EPC

There are now over 30 DEA's who have contacted me to state that they have not received payment, or have had part payment from Express-EPC. I don't know whether we are a minority as others are still working for Express-EPC, so presumably are getting paid.
I had an email earlier this month from Express-EPC stating that I would be paid within hours. I went away that weekend thinking that soon this sorry saga would be over. But no, there were follow up questions - which invoices were outstanding? had I cancelled any of the EPC's? I replied to these and waited for payment.
On Monday I sent an email to chase up what had happened to my payment, but have not had a reply, nor my money.
We have highlighted our case through all avenues open to us, recently getting coverage in Estate Agent Today.
However, what is really needed is a change to a system that is still training DEA's when there are already too many. This is bringing revenue for training bodies but is making it possible for others to exploit DEA's by offering rock bottom prices for our work. Whatever we get paid we still have to pay our lodgement fees to the accreditation bodies.
For those DEA's who were doing HIPS their income was slashed at a stroke by a Government that didn't consult on the change and didn't appear to do a full regulatory impact assessment.
DEA's are usually self-employed individuals, so representing the smallest of companies. We work independently and have little contact with each other, so we are not a unified group. We are motivated and professional; we have been trained at our expense and set out on our own to make a living. We get little recognition or support for our efforts and find ourselves working at a pretty low hourly rate.