Suspicious trading company - Travelstart

I recently booked flights with Travelstart. Due to a Covid case in our family we have been trying to reschedule our flights. This company has no landline or cell that you can call, they dont respond to Facebook messenger, online query or watsapp. When they respond, they send you a one liner which is ambiguous where you need to confirm certain details, you need to wait another 3 days before you lucky to have them respond to an email. You choose them as the travel agency to assist but they tell you to sort your problems out direct with the airline. The customer reviews on their FB page is horrific, I should have checked this first before I booked. My worry is that customers have complained they awaiting refunds for months, some people stuck on international travel and cant return home as the company cant or wont assist! It seems they quick to take your money to make a booking and even after you take their insurance, you will never get a hold of them again so you have to sort your problems out yourself! If they cannot deliver a proper service, this company needs to be reported for *****, misrepresentation and should be investigated for maladministration. We hope Hello Peter can assist us to resolve our matter and many others referred to on FB.