Nedbank Credit Card Division Useless

In December I settled my account in full after receiving a summons from Nedbank. I settled my account and never used it again, Now I have Nedbank sending me statements telling me I owe them monthly installments.<br> After having your lawyer on my case I have settled my account and will not be liable for any funds, if anything I over paid on my settlement and you owe me money.<br> Your call center is useless and I will never do business with Nedbank again. Cancel my credit card and resolve this asap.