Prepaid cards as in gift cards or prepaid sim cards?

If you are a prepaid customer, you should be able to use the prepaid sim cards.

If you are referring to the gift cards, I recommend selling them online like on kijiji or facebook market place,

sorry ment to say not a pre paid customer , i am a pay as you go customer

and its the purple cards that say koodo prepaid at the front

Is it voucher? How much was I?

50 dollars

Hmmm. $50?

You mentioned it's purple. Is this looks like this?

no

it looks like this

Ok. Then you should be able to top up prepaid/ pay as you go account...?

When you say pay as you go, i think you mean that you have a regular monthly plan that incur overage fees if you go over your allotment of data or minutes.

Again I would recommend selling the prepaid vouchers on facebook marketplace or Kijiji