Woolworths are ******* and ***********

Can you please investigate what is going on, I saw on the app that it says I owe Woolworths money for a credit card and its handed over to external people yesterday 30/10/2019 for collections, I don't have a credit card with you, the credit card I had with you was paid up and I requested a closure for that a long time ago and it was closed , I asked and I got a confirmation that it was closed, all along my app was showing me that I must apply for a credit card , only today when I saw this. I need an explanation I don't even have the card , it was destroyed instore. For the past months I never received a communication that the credit card is still active and I'm now owing them, people are just *********** and blacklist us for no reason, I paid your money what do you want from, My I'd no is ***, please rectify this otherwise I will have to sue for the damages