www.wowfreestuff.co.uk / They didn't provide coupons and provided some fake bill

I recently started to apply for free coupons through the website www.wowfreestuff.co.uk. I waited for them, but these jerks haven’t sent it to me. I already wrote several complaints and asked to provide coupons. But these jerks didn’t reply as well as they provided the bill for something. I have no idea what it is, so please if you have any deals with them, simply post comments about them.
They didn’t provide coupons and provided some fake bill