1VOUCHER / VODACOM ****

I was called by someone who said they are from Vodacom and I won a prize, but to redeem it I had to purchase 2 vouchers from 1voucher - I was ****med out of R4967 1-voucher purchases, which the ****mers redeemed the same day. 1Voucher should alert potential buyers about this. People buy it unknowingly. Their website also doesn't allow for reviews - which is not good at all.