Classic car insurance

I have had my old cars insured with Grundy since 1993. I've never had to file a claim, but I did ask for their help with a guy who door dinged my Challenger conv. His insurance company was balking at paying to have my car fixed. The guy I talked to at Grundy about it made a phone call and the other guys insurance company had a big change of attitude. I feel what they charge is fair.