Pathetic service --- Re:Change of banking details

Having recently changed banks and armed with my ID and Proof of the new account letter I went to the Pavillion Telkom store on the 20/11/2015 to update my profile with my new banking details for debit order purposes. The lady assisted me and after a while she informed me that my new banking particulars have been updated on the system. I specifically asked her for proof for my records but she said they dont provide proof and she has already updated the change. <br> <br> Unacceptably to my horror I find my old bank account was debited earlier today. This is totally unacceptable and pathetic, useless, terrible service. Luckily I left my old account open with some funds in it so the debit order did not bounce but I am still disgusted that a simple thing like changing banking particulars cannot be done correctly.<br> <br> The person responsible must be traced and held accountable. I demand that my banking particulars are updated as a matter of extreme urgency and that i receive proof of this for my records.Please contact me and ensure that this matter is rectified asap. I will be closing my old bank account so I cannot accept another ridiculous error like this.<br> <br> Thank you.