Legal department not answering calls and emails

I have paid FNB a month ago and I have been calling their legal department day and night with no avail. when the servicing team eventually picked they tell me they can not help me with my paid up letter because the loan was with their legal department. what does one have to do to get a simple letter. they do not update transunion at the same time they are not available to help you do things your self. I am frustrated I paid their two loans in full and I keep getting sms from them saying i must pay.

FNB legal please get back to me. Your service agent the name of Duduzile was no very polite as well!