Impossible to contact

Mweb has gone out of their way to make it impossible to contact them. They don't accept emails. You can phone and get an IVR which say they sent a OTP which they haven't (used to work). There is a WhatsApp bot which also asks for an OTP. Again no OTP. I've never met a company that actively tries to avoid their customer like MWeb. I'm trying to close the account of a deceased relative. Maybe they will read this and get back to me.