African Bank Rewards Used to be

The rewards system used to be great, I used to redeem my R150 checkers voucher monthly and used it every month. It really helped those few days before payday that everything ran out and no funds was available. However for the past 2 months I am unable to redeem. Last month (May) I e-mailed the bank notifying them of the problem, still awaiting a response. Now I am battling again and wonder if this is a way of forcing me to rather option for African Bank to pay my bank fees and the rest of the vouchers has become just a show? No one wants to lose out on free stuff so we would end up taking any option that works, but this is the only option that works for me as I have uncapped wifi, no pre-paid electricity and use my own vehicle etc. So this is the second month I am missing out on my rewards and not getting any response from anyone.