SLOW SERVICE!!!!!

My account was paid up in April 2015 already and still it shows that I am outstanding because they fail to up date their system,now this is making my life difficult as I am trying to get a house but an account that has been paid up is stopping me.It is really inconvenient as I pride myself to have a good credit record yet I look bad for something that has been paid up months ago...every time i speak to a consultant they tell me I must wait for turn around time which is 48 hours its been a week already,please sort this out as this is really an inconvenience for me and if this is how customers gets treated,I definitely wont recommend you to anyone