I Want My 2 Voucher To Transfer To Purchase Another Coupon.

I have the coupons and i want the voucher to be transfer to have another purchase. The promotional value is extended to the end of September. The amount paid for the vouchers are 36$ each(36+36).Query- The promotional value is still continue at end of september. It is the Eight classes.Does it mean that I can have every class if I start before the promotional value gets expires.The amount paid for the voucher never NEVER EXPIRES.Please suggest.Thanks