Letter to refute your insurer's rejection of your insurance claim

[Your address]

[Company address]

Dear [name of insurance company]

[Ref: policy number]

Thank you for your letter of [date], in which you rejected my claim against the above policy for [damage] on the grounds that [reason].

I refute your argument on the basis of the wording of the policy, [quote policy wording]. 

Furthermore, I enclose a report from a relevant expert, backing up my claim as follows [details of report].

This shows that the damage was caused by [cause], and was not in any way due to [neglect etc] that you suggest. 

I am therefore covered by the terms of this policy, and expect you to reimburse me the sum of [£…] as detailed in my original claim of [date], within 14 days.

Yours faithfully,