Poor customer service

I have been communicating with Avon to remove my name as is still not updated on ITC and I was advised that it will be removed in 21 days after paying off my account, the matter has not been attended to however I have the letter stating that this account was closed and my name will be removed from ITC. The outstanding amount of R35.00 was paid on the 27/05/2019, and had i received any form of communication that i had outstanding R33.00 i wouldn't be here.