Travelstart incompetence

International flights for December 2019 to Zanzibar were booked months ago. These flights were subsequently cancelled in September 2019, however we were never notified by Travelstart of the cancellation. Only when we tried to do online check in prior to departure, did we realize the flight was cancelled. Travelstart were very unhelpful and refused to rebook our flights despite flights on another airline being available. All they offered was to refund the original flight after 6-8weeks. We had to rebook our own flights at a significantly higher cost. I will never use Travelstart again as they don’t communicate any change in flights and were completely unhelpful in trying to rectify the problem.