You can cancel TP without calling in now. They changed fixed it now and the e-cert will go back directly to your account, it used to be 5000 points and your TP certificate would disappear. Mine has a expiration Sept 2020, already extended twice from 2018, so waiting for another extension to 2021. Status chasers, no point of staying this year, since they announced they will extend current status to Feb 2022, so save your TP for 2021 if you get the extension, that is when earning will count.