Poor Service from Finchoice

I have a negative credit score due to Finchoice not updating their system or ITC. This account was paid up long ago and even have a credit on, but yet the account on my credit report shows as outstanding. They are quick to phone for money and nagging for money but when you are paid up and need them to close the account they are slow and the communication from their side is non existent. I told them to write off the credit in order for the account to be closed and to send paid up letter. This doesn't solve my issue or question as to why the ITC hasn't been updated long a go. Please can someone from Finchoice get this sorted for me without any waiting periods as this is lack of service from your side - the ITC should have been updated long ago even showing that there is a credit - shouldn't it have? Definitely not recommending Finchoice to anyone.