Ignoring Refund Request for Postponed Expo

As my previous review has been removed, but the problem remains unchanged, I will re-review. We booked for an expo which was twice postponed on very short notice, and after the second last-minute postponement I requested a refund for our tickets as we could no longer attend. At this stage none of my emails or Whatsapps are answered regarding the promised refund. No refund has been received. Terrible experience.