Paid up Account

I have a complaint with regards to Foschini Group Head Office customer service in Cape Town, I had a clothing account with Foschini which was handed to the lawyers, I have now paid up the account three weeks back it is reflecting on their system that I paid the account up and I have requested them to send me a paid up letter and close the account, but now they are giving me a run around. I have been contacting them every day since I paid up the account to send me the paid up letter and close the account because I need my name cleared but they are failing to do so. They are telling me that I must contact the agent that they handed the account to and I did those people are telling me that I must contact Foschini Group because they were given a mandate by Foschini Group not to send paid up letters to their clients and that they cannot send me a letter with Foschini Groups letter head. Both these companies are giving me a run around for 3 weeks now with regards to this matter please assist. They have sent me a Zero balance statement showing that I do not owe anything but not doing what I have requested them and I fail to understa