Outstanding Balance not updated

I am so annoyed with the kind of service i am getting with this company, between Wonga and Experian there should be one who has to account for the ******* that is happening on my credit profile. i have paid wonga over a year ago , probably going for the 2nd year but my account seems to be not updated, i don't know if i should involve ombudsman or what is it that needs to be done , i am getting sick and tired of this.

i have sent my paid up letter to Experian 7months ago to get it updated , but till to this day i still see that account stating that it is an open account and in arrears.