STANDARD BANK does not respond to requests

Because a Trust has to operate a bank account, the Trust has a savings account with the business branch of Standard Bank at Mall of the North, Polokwane. About 18 months ago the bank blocked the sole signatory on the account, one of the trustees living in Perth, Australia and ALL efforts (telephone, emails and personal visits). to contact the personal banker on the account Mr. Wal*** Sab****to find out why, failed. HE JUST DO NOT RESPOND - not even to a request from his own bank at Langeberg Mall, Mossel Bay. We are now trying to have the account transferred to Mossel Bay and again he just do not respond to any correspondence to get the matter started