VERY IRATE ACC IS PAID UP AND THEY REFUSE TO CLOSE

My account is paid up and I called their call centre to request for my account to be closed and the credit balance to be paid back to me. The consultant I spoke to told me what is required for them to close the account and get my money back, I did as I was told and attached the supporting documents but to this date the account is not closed and I still didn't get my money back. I have been given a run around and nobody bothers to call me back with feedback. Every time I call a their call center they place me on hold for more than 20 min . I THAT DAMN ACCOUNT CLOSED AND MY MONEY BACK AND I WANT TO BE REUMBURSSED FOR ALL THE MONEY AND TIME I WASTED TO REMIND PEOPLE TO DO THEIR WORK!!!!!!