Travelstart flight change frustration

What a huge frustration dealing with flight changes via travelstart. I booked a flexible ticket to allow for sudden changes. Travelstart does not have any human contactable options. I've logged tickets on their website, via the mobile app and tried their automated WhatsApp line. It's been two days already without any feedback, and the changed flight is tomorrow. I have no idea whether I will get this change finalised, so I cannot make any arrangements regarding accommodation. Even the Emergency contact option was fruitless thus far. Automation can not be the only option. I want my money's worth