Not paying people's money back!

It has been a year since we filled in papers for my husbands pension fund. After a year we received a letter from them and in the letter they said my husbands bank account is not active but he gets he's salaries in the same account. I can't understand it because we phoned them every week asking for someone to help us. Then they will tell you that it's still busy with it and after a year a letter. Just don't know anymore. Ref nr is R 905759 please help it seems like the don't want to pay back your own money