NO ACCESS TO MY INTERNET BANKING AND NO HELP AVAILABLE

I am currently working in the UK and went onto Standard Bank internet banking to make a payment at month end. I could get into my account but that's where it ended. It will not allow me to make any payments, nor allow debit orders to come off. I tried the banking app but same problem. Ironically they allowed a payment to be made into the account! Despite numerous emails, which at least were initially answered, I was told could not be helped and given telephone numbers. The telephone numbers provided were only for SA, and the only other number I found on google was for offs**** banking but it cuts dead when you press 1 for SA. This is now impacting my life in not being able to pay the accounts I need to. I've been a client since 1983 where I opened my first account in the Carlton Centre, but I have not even had the courtesy of communication to let me know why there is an 'issue' with my account and what I need to do to resolve it.