Zero Communication or Feedback

Probably the worst customer service ever. Purchased vouchers from them and restaurant did not want to accept it. Contacted Hyperli and they said they will accept it only the following week - everything was sorted out. Turns out they failed to pay the restaurant. No communication from Hyperli support team. Purchased a mystery prize. Received no name earphones, It broke in less than a week - left side not charging. Emailed them multiple times and requested a refund on profile. No update, phone call or email to date received and its been a week already