Debonairs upper level disgusting

Worst customer services ever!!!! The people who sell there have no idea whats going on! I have a voucher from vodacom that states that i can redeem voucher online and at the store but Lethu at the gateway branch upper level said that i cannot even after showing him proof! I left there hungry i hate this stupid debonairs!!! And when i called customer services it sounded like the agent was dailing somewhere in the mountains he said i must drop the call and call back and because i am hungry i did and wow Regina the next consultant said they will get to me in 48hrz. This is nonesense i regret even purchasing this voucher nxa