If the auto insurance company decides to terminate your policy because of an unpaid or late premium, they must give you 15 days notice in writing before canceling. (pocketsense.com)
Three weeks notice in writing is necessary for a refund. (massaudubon.org)
In the event of any accidental loss or damage, the insured shall give immediate Notice in writing providing the details of the loss or damage to the insurance company. (policybazaar.com)