Prepaid Itemised billing

on the 12 September 2015 i made a request for itemised billing for calls made on the 22 August 2015 from this number *** and i filled the forms and returned them, but till today i still have not received a response. how long does it take for a prepaid customer to get an itimised billing, the reason i request the itemised billing for call made on 22 August 2015 is that there was ***** on my bank account and i called the bank to stop the card, but tnow they need proof from MTN to show i have called so that they can refund me my money that was ****** on my account, please help as i need that money. Please forward the itemised billing to this email address [Email Removed] i called *** between 18h00 and 19h00.