Disputing Settled claim amount

[CaramelB]

Hi wonder if I can get some advice. My previous car insurance company recently settled a third party Claim made against me. I have very serious concerns that the third party exaggerated the repairs/replacement that was needed on their vehicle and the insurance company just paid and expect to recover all the costs from me (there is an all section £3000 excess on my claim and I’m at fault for loaning my car out). However I’m not saying I shouldn’t be paying anything it’s just the amount I’m Querying. The insurance Company sent me the invoice from the third-party saying it was their report, but there was no report it was just a price list. I asked for the report from their engineer who verified the works and I was ignored. They then told me that my complaint wasn’t upheld and that if I am dissatisfied I can complain to the financial ombudsman. Is there any way that I can get all the details reports information from this claim?