By taping any conversations you can then refer to the content thereof in general terms in any 'Statement of Truth' (formerly an affidavit'), and the repeated denial of the full disclosure of the documented facts and information, (quite legitimately requested by you), from the lender and their solicitors, or whomsoever uis acting for them, now of course in complete contravention of the Civil Procedure Rules (CPR) which actively encourages the provision of information by the parties.(posted 8524 days ago)Hence 'if' they have a claim, prove it - up front! Stand your ground.
With best wishes, Vic