In case anyone is no longer wanting to travel and can't get through to the SQ call centre, they've introduced a pressure relief valve by not charging no-show fees for those who don't cancel before their flight ... as per details on SQ website...
In view of the high contact volumes across our customer service touchpoints, we will be waiving no-show fees for travel between 16 to 31 March 2020.
If you have decided not to travel but are unable to reach our customer service representative before your travel date, please be assured that no-show fees will be waived when you rebook or change your ticket to open-dated.