Vodacom Tobi whatsapp chatbot

I have been trying to change my debit order date, vodacoms solution is doing it via that chatbot Tobi,it keeps saying it cant assist due to technical difficulties,i try calling the call center to talk to a human being but it refers me back to the Chabot, i send and an email to customer service it also reverts me back to the chatbot,ive been frustrated for the past 2 weeks..Vodacom if you going to solely depend on this chatbot make sure it works or the must be an alternative way..zero stars for their customer service shame