Scientists accidentally kill world's oldest animal at age 507. The oldest animal ever known lived from 1499 until the day researchers cracked its shell open, killing it in the process.
For example, there is a federal law (and similar laws in every state) allowing consumers to cancel contracts made with a door-to-door salesperson within three days of signing. You might use that law after hastily agreeing to have someone repave your driveway, deliver lawn fertilizer, or put a new roof on your house.
2 Write to the service provider. If you want to cancel your contract, such as a mobile phone contract, you must write to your supplier within the cooling-off period to tell them you want to cancel. If you're close to the end of your cooling-off period, you'd be better sending an email.