Please make a complaint to the Bar Council. Anyone who hasn't, please do so. All the process and procedures are on the Bar Council website which you can do yourself or get a a lawyer to assist. Yes the complaint will take sometime to process but it's better than nothing.

Otherwise, you can also get a lawyer to sue them for breach of duty/negligence.

All lawyers has Professional Indemnity Insurance so even if the firm closes down, you can still try to get the insurers to settle the claim but you must take action. No action means no recovery.

All the best!