Debit Order Dispute

I have settled my homechoice account with Nimble in October a paid up letter was sent. I was then given a discount of 5% the discounted amount was not erased who a while that I kept on asking if a d/o will go off or not, I was told it won't. On the 24 November I received a msg saying d/o due for homechoice acc, I then call I was told the account it closed no d/o will go off. Nimble group agents are soo *********** they never know what is happening with the account. I spoke to a rude Laticia Moodly lady who had no idea how to assist me, I requested a call back from Supervisor she adv Sally Kok will call me back and still waiting.