Nedbank refusing to close my business account

In the year 2018 I opened a business account with Nedbank. This was the worst decision of my life. The lady who was assisting me to open the account at Nedbank bedfordcentre mall didn't order a card for me. as a result I couldn't transact because I didn't have a business card I eventually got frustrated and asked Nedbank to close my account. To my show its now 2022 and Nedbank sends me a message that the business account is on negative, how when I haven't been using the account and I asked you close the account? mind you there was even some funds that I didn't withdraw. What is wrong with you people? why are you refusing to close the account that I never even use? Close that account !!!!