Wowcher complaint: Faulty goods

My complaint:

Two IPADS bought both faulty but can’t get a refund WOWCHER forwarding emails to Renewed Electronics who are saying WOWCHER has 30 day return of faulty goods but I had bought these as Christmas Presents cost me £234.96 too much money for me too lose also two disappointed grandchildren

Suggested solution:

Either replace faulty goods or give a refund