Poor service and unprofessional

On the 27 November 2020 I settle my account and received payed up letter , on the 11 January 2021 I send the mail to the customer service consultant Refilwe MThembu to find out how long it's going to take for them to clear my name at ITC , she told me it's going to take 1 to 2 months , when I check that account still showing outstanding balance , on the 21 of march I send her the mail to find out why the account still showing outstanding balance and affecting my credit score, the consultant she didn't even bother to get back to me till today but the time I was owing them they were busy calling me none stop , for me as the client it's poor service and unprofessional ,. Only thing I want from them they must clear my name at ITC it's been 5 months now thats all ,I don't want any business with them . They can email me back at ***