Double deductions - Dropped calls

This is terribly annoying that yet again Nedbank has debited my account twice within a short space of time. Yesterday an amount of *R2462 x 2 was taken from my account. When I called you call center just before 16h30 the first consultant I spoke to found the error but then asked me to hold, only to hang up the call. I called back and spoke to a second consultant of which she had captured my information wrong and refused to listen to me when I advised her that my account has not been handed over like she said it was because the guy I spoke to before her found my details. I have responsibilities and can not be inconvenienced to such an extent due to an error done by Nedbank. At 16h30 your call center closed and I was forced to log the complaint in your website as per reference number: fi***. May you please insure that my money is refunded ASAP and that the following error is not repeated on my account. If I had known that your call center and billing system is *********** I would have never app**** for the loan with you in the first place.