Standard Bank iStore Credit Card

I am absolutley shocked by Standard Bank. This card was settled in full and the account closed last year. We are unable to continue our Home Loan process as they say that we have an amount outstanding with them. We contacted Standard Bank in September, they confirmed that there is no money outstanding and that the account is closed, we requested a letter and still to date we have not received it, we have phoned numerous times to be told it was sent, then told the consultant did it wrong we shouldn't have gotten a letter, to then be told we will get it in 24 hours, to then 48 hours, up until now, nothing. I am thrilled that we chose to close our credit card and have no intention of dealing with Standard Bank. Our plans have no choice but to be placed on hold due to ther incompetence. Shocking!