Overdraft unwarranted !!!

For all my by banking life I have held my account with Standard Bank and for the most part it went well. Around 3 or so years ago I acquired an R500.00 overdraft on my account. Now yesterday I withdrew some funds from a Standard Bank ATM. When I looked at the slip I was surprised at the information that I saw. All of a sudden there is a minus balance that is 30 times the overdraft amount I agreed to. I then checked my balance by phone this morning to see if the slip was not a misprint. And still it was so. But on internet banking, the balance is a whole different story. Now I want to know the following:<br> <br> Having not being in touch with you for months about this account, with no phone call to and from you nor a visit to any of your branches. How did this sudden overdraft appear without my permission? Who and why did they activate it? Exactly what is going on in Standard Bank? What am I seeing conflicting information for??? You just keep moving backwards some days...geez!!!<br>