Records not up to date

I have had an Edgars account for over 5 years now and have been an Good paying customer. About 3 months ago I owed about R2700 on the account and have been paying amounts the exceed the required monthly installments as I wanted to payoff the account. In August I received my statement and no amount was due nor overdue on the account. Towards mid September I received an sms stating that an amount of R153 was due and that I had to pay the amount in order to maintain my good paying record. I then went to Legit and paid a R1000 into the account. On 12 October 2015 I app**** for vehicle financing and I was told by the bank that it will not be approved as my ITC records show that I owe Edgars R153. So this has created a bad credit record to my name. The bank consultant told me that I need to wait for Edgards to update my ITC record then only then can I try apply for vehicle financing. What I do not understand is that I paid the account a month ago but still Edgars has failed to update their records. <br> <br> This is very unfair on customers because now I cannot buy a car because of someone failing to do their job. I need an explanation for this.