Inflexible tickbox questions

Vodacom's call centre staff try their best to help, but they are stuck with ID check questions which don't give them any leeway. It took 28 minutes on the phone not to get the answer to my question - what is the data balance on my Vodacom mobile wifi? Before they can assist, they have to be sure it's me. Fair enough. But the process is not. Question - what is the tariff plan? Answer - No tariff plan - I top up as needed. Wrong - every sim card comes with tariff plan. Question - when did you last buy airtime. Answer - I don't buy airtime, I buy data. It's a modem, remember. Wrong. What is the modem name? There is no manufacturer's name on the modem. Wrong. So they are not allowed to help. Then I suggest Vodacom asks me some other questions - sorry we don't have other questions, you must answer these ones and we can't help you. And no way to register this complaint on the Vodacom website, so I've turned to Hellopeter. But I did give them zero for customer satisfaction because there is no effort to resolve the problem if you don't fit into their little tick boxes. Serve your customers, Vodacom.