Instant money service - extra service by spar Sarnia

Friday morning, I had ask brother of mine to deposit money for me at Spar Sarnia R1000, unfortunately it was his first time, he had his driver's licence with him of which it can not be used, the cashier offered to assist with her personal ID card,( I'm in Johannesburg at the time), they proceeded with the transaction, all good I got the sms, at 16h30pm after I knocked off work, went to town, to withdraw "voucher redeemed" , only to find it was redeemed in Pinetown, the only person who's able to change information with the @standard bank call centre is the one person who's ID was used guess who? The cashier, how do I know this I have been an assistant manger in various spars and have seen such, I am very disappointed with the cashier from Spar Sarnia Zinhle.