Pathetic customer service

I have a life cover with Sanlam. They have deliberately captured my details incorrectly on their database so that my dependents will be denied their claims in future. I have sent them countless emails and phone calls asking them to correct it, they outright ignore me. All communications sent to me, are addressed with an incorrect name. Yet, they know the correct bank account number to debit me every month for the past 5 years. I believe they are deliberately doing this because even after I complained to them, using the same email address that they used to send me communications; they asked my name. In other words, they're saying they don't know the name of the person they are supposedly covering. The same person they debit every month. They don't know who it is. This is infuriating and outright *****ulent.