Double payment

<p>I have a credit card with standard bank,did not have a debit order,was paying via Internet banking from my bank,someone decided to call me and told all the benefits under the sun of having a debit order,I agreed and 2 months down the line,my debit order did not go off,3 days later I decide to make a transfer to the credit card,the following day I received an sms that there was a technical issue with regards to debit orders,so I decided to call immediately and waited on the line for 10min,after getting an agent,she just told me not to worry about the debit order going off because I have payed already,she did not even bother checking my account,the following day the debit order went off and was not the amount that we agreed on,it was more,now my personal account is overdrawn,who's going to pay for those charges?This is just poor service for such a big financial institution . I'm so disappointed </p>