THIS is a total scam. I sent 265 GBP value vouchers on 4th of December, and never got anything back. I can provide screenshots, and mails i have sent but never replied.
IF it happened by mistake please contact me to provide new bitcoin address. (Just now changed my bt address on my online wallet) (You can verify its same person by sending you ukash vouchers and contact by email) (but i doupt its a mistake)
EDIT: Screenshot provide: removed
Old address to see for yourself if any bitcoins recieved on blockchain: removed