Standard Bank refusing to pay out investment

As a pensioner, one expects a bank to be helpful and to understand. But not Standard Bank.<br> It doesn't help sending them secure messages or e-mails, they will just keep on ignoring you. <br> A fixed deposit which matured already on the 2 April 2015, still has not been paid out....<br> And they refuse to change the account to which the interest on the fixed deposits are credited.<br> They do not even seem to be phased if one goes to the Ombudsman or not...<br> This is VERY VERY BAD - STANDARD BANK.