Vodacom Legal Department

I do not know if this will help to complain. My Brother in Law passed away. So I assisted my sister to sort all his accounts out. All went smoothly, except for the Vodacom Legal Department. I got a very detailed report from the local store, as what to send to The Legal Department. I sent all the documents away to them via email. I got one response with a reference number. In the response, I mailed them and asked for a copy of the document that we need to complete. Since 3 February 2021, I had no response, despite mailing them daily. I also tried phoning them. The phone is not answered at all. This morning I copied customer care as well as the CEO. Will this help? I do not think so