Five hundred carpetbaggers expelled by the Portman Building Society may soon be able to appeal to the Building Society Ombudsman
The aggrieved former members were expelled from the society in January after campaigning for the Portman to demutualise.
The expelled members were offered just £50 compensation for their inconvenience.
They have been going through Portman's internal complaints system since then, but a deadlock has been reached.
A spokesman for Portman says only a “handful” of the carpetbaggers have accepted an offer of reinstatement.
Acceptance would have meant signing away rights to future windfalls for five years under the society's new charitable assignments scheme.