Adidas Vouchers

Good day,<br> I recently signed on & went to the gym for the stipulated number of times to qualify for Adidas voucher worth R1350. I received the voucher code and was told by the consultant at the Benoni branch that I could use the voucher either on-line or at any Adidas concept stores or at Total Sports (provided I purchased Adidas products only). Online I can not find the product or size that I require and have tried to use the voucher at a concept store (Adidas) but am told I can only use the voucher on-line. Please can someone assist me in this regard. Why award people a voucher that is made near impossible to utilize!<br> Thank you<br>