OTP Function does not work since website and app upgrade

For some unknown reason I cannot get an OTP from Webafrica so that means I am locked out of my account. The only means of contact is WhatsApp and reference numbers or escalations are ignored completely once the chat ends. The last reference I received over a month ago - ***0 has been completely ignored. I was informed by the agent that assisted me that Webafrica will call me to resolve this issue, this never happened. I need to log onto my account so I can download my invoices on a monthly basis in order to put in an expense claim. I find myself again a month later that this has not been resolved and I cannot get my invoices? The delay in responses is frustrating. It feels like a never ending cycle. Ever since the client portal and mobile app was updated. It is so impossible to get assistance.