Jet refusing to close ********** account

I closed my account with JET in 2017. In 2020 I was told my account is active and that there is an online purchase. I requested there consultant to cancel the order and close the account as I know the account to be closed in 2017. I was asked submit necessary documents and the invistigation was done. I was told that someone was trying to do ***** and the account will be closed. In February 2020 They send a statement that I must pay +/-R45. Which I went to the shop to asked them to close the account. The consultant told me he will forward to his supervisor and the new statement come again showing that the account is active and owes R23. I am angry as this is ***** and they know it and they don't want to close the account. This is affecting my credit score as it shows this ********** account to be in areas.