Standard Bank

I have an account with Standard Bank for 30Years now never was my accounts in arrears . Then they send me a SMS that my loan account is in arrears and that I must make a payment to prevent further action. Then I got a SMS from Stupel&Berman which I presume is collection attorneys. I phoned the bank, and according to them this was a technician problem. So, they stopped my accounts for the second time. Nobody can explain why this is happening for the second time. I cannot pay for anything as my accounts is stopped. Never in my life was I behind in any accounts, and nobody can give me answers as to why this is happening. So, if the lawyer put me on the blacklist what then? I seem that the customers service is not high on their list. It is just easy to say it is a technical problem and for days i could not use my account, I have cancer and need to be able to use my accounts for treatment. This is now the last straw as this is the second time this happens. And just a water down excuse .