Avon Account Still not closed on Credit Bureaus

I closed Avon account over a year ago and I have letter of confirmation as proof but the account still appears on my credit reports . I have been trying to get the matter resolved with Avon Justine with no luck. Going from pillar to post via email and their calls aren't going through. This really reflects poorly on the organisation ; the client service consultant never get back to you. Their staff needs to be trained on this important part of customer service.