Useless Customer service

I bought advance vouchers on the Vodacom app for steers on the 20 January 2023. I went to 2 steers in Rivonia because the vouchers didn’t work. I called Vodacom to speak to the consultant to resolve the matter non of the consultants knew about the advance vouchers and the lady that work at Vodapay said they can’t assist me kept on sending me from pillar to post up until they hang up and one said they will call me back and I never got the call to this day. Today I call again only to find another consultant who is clueless about the voucher advance service and he also can’t help me sending me from pillar to post. This is so embarrassing that you offer a service but when customers have an issue No on knows how to resolve or make the customer feel at ease. This is humiliating that you have to go into a store and want to buy something it doesn’t work. And the people who work there can’t even help you resolve the matter