Radio silence from Standard Bank

My pin was blocked due to incomplete information provided by an agent who was assisting me. I no longer reside in SA so cannot go in to a branch to rectify. I have called numerous times & been told conflicting information & I was also asked to send an email. I sent the email 2 weeks ago & again yesterday but there is just radio silence. I cannot transact nor view my accounts nor keep calling as it is expensive & I am given wrong information. Even the UK number provided by the WhatsApp line goes unanswered. I need to speak to someone who can adequately resolve my problem instead of being pushed from pillar to post & without having to actually be in South Africa to get assistance.