False Advertising deposit R100 and i will get R20 voucher

Good Afternoon

I received massage via your shoprite app that i must deposit R100 and i will get R20 voucher.. And still not received anything one of your customers service consultant phoned me she never helped me sims like she don't even know what she is talking about.. Please stop false advertising and also teach you customer service to offer good customer service... And i was promised that it will be loaded today still nothing