Hi
Which Insurance company are you with? What is the policy called? Do you have Accidental Damage cover?
Some policies will provide cover if emergency services have to break in or will cover under Accidental Damage.
If you post back, I may be able to advise further. You should submit a written complaint to the Insurance company and advise them that you want to refer this to the FOS. The Insurance company will be charged £450 by the FOS, even if your complaint in rejected. The Insurance company may therefore decide to look at your claim again and make an ex-gratia payment towards the damage, even if not technically covered by the policy.
Huckster