How do you cancel an insurance claim?

As long as you have not received payment and cashed the check you can always tell your agent or the adjuster that you wish to withdraw the claim. It should not be an issue with the company unless they finished the claim and closed the claim but even then they may be agreeable to allow you to withdraw if you wish. These days you only want to make claims for larger claims. Insurance is not for small claims and it can actually do you more harm than good to make small claims. Insurance companies track amount of claims as well as frequency of claims and either can hurt your record.