Dont keep their promises

I did surveys and was not rewarded for 3 of them, I exchanged my available points for woolworths voucher but I never received any emails after their "within 10 working days period"they claim that they have paid out over a million a month but I have never received a single voucher I am still waiting for my vouchers. I do not recommend anyone from subscribing with them iys a waste of time and energy plus their surveys are long.