Hyperli vouchers - Trying to make a booking - No answer or reply to anything! sent

I have been trying to make a booking for the past three days. I’ve called all the available numbers but received no answer. I emailed and got no reply. I also sent an inquiry through their website, but I have received no response. Additionally, I attempted to call the lounge directly, but there was no answer. I have two Hyperli vouchers and I am trying to use them, but I can't get hold of anyone. This is ridiculous!!!