Account paid up and still no service

My account was in arrears but now up to date. No response from Woolworths staff that makes any sense. Just getting send back and forth with no answers as to why my account is still reflecting as a negative on my credit score. Their lack of service and answers will be the cause of my home loan not getting approved and consequently my family will be homeless if negative listing does not get sorted out. Automated responses and *********** staff cannot deal with this issue. What more would you like me to do? The power is in your hands and clearly that is a mistake. I regret ever supporting Woolworths for the last 20 years.