Money ******** site

I bought 2 vouchers which I can't use any more due to medical reasons, I've written to hyperli request a refund to date I've had no response. It's really frustrating as one cannot even call to follow-up as they have no contact number. I went as far as writing to the supplier and was told that I needed to request the refund from hyperli as they have not been paid by as yet. I'm really frustrated!!!!!