information provided to credit bdx incorrect

Please can some assist desperately this is my second complaint with no feedback or response. A loan was taken out in 29.07.2015, with the agent advising the first installment will be paid in September 2015. I then settled the loan within 30 days in August. I have done a credit check and have noted that the loan in question has been updated on my profile. This information is incorrect. The contract advised first installment to be in September therefore the information should only have updated effective 01 September 2015. Please update transunion, experian and compusan !!!!!! PLEASE PLEASE PLEASE