Useless Stannic

My mother passed away and she has a Stannic Vehicle Finance Agreement. I am struggling for 2 weeks now to get hold of someone to assist me. Numerous emails was sent, call me back requested and phone calls. I even had mail stating they apologise for the delay and asked if they could help. I responded and sent all the info and still no response received after that. Yet at this stage we are still struggling to get the account information and the rest of the details that needs to be settled. Never do business with Standard bank or Stannic! RUN!!