Threatening credit messages

<p>Last year I was told to pay R570 to close up my woolworths account,I did pay it and was emailed a settlement letter,but recently i've been receiving messages that I should pay Woolworths, I've recieved messages with Woolworths reference number that I will be blacklisted if I don't pay,I don't understand why,when I check on my credit berue Woolworths still appears. I've never experienced such in my life.please remove my name!!!!!!!!</p>