Unagreed Deduction

I have an account with Standard Bank which I know is in arrears and I have previously made arrangements. I was waiting to get paid so a payment could be made on 29 August 2015 (Saturday). Just got paid now and they just took R1000 off my account without me knowing, budgeting or agreements made. I would like Standard Bank to refund this money urgently as I am now in a worst financial predicament. I have asked for a debit order to be put in place as I do not always have transport to go to a bank over the weekend and work full time during the week. They told me they could not do that and I can apparently also not load them as a beneficiary to process eft payments. They have inconvenienced me in more ways than one and I am totally fed up with the terribly bad service I have received after being a client since 1995. Now I am definitely going to change my banks. This is the last straw with Standard Bank.