Please close my old Avon Justine account

Good day

I opened justin account in 2015 and placed my first order. I paid my account at Woolworths on Durban. Early this year I found that I have two different accounts with Avon and Justine. I called Avon; they instructed me; to write an affudavit as a proof that I did not renew my account. Email was sent on the 11th June 2019 until now now feedback. I tried to call them; I am not getting. I need to clear my nam from bad credit score.