https://central.xero.com/s/question/0D58V00009RmUNZSA3/what-is-the-cancellation-policy-of-%F0%9D%94%BD%F0%9D%95%A3%F0%9D%95%A0%F0%9D%95%9Ftier-%F0%9D%94%B8%F0%9D%95%9A%F0%9D%95%A3lines