*****ulent case

I reported a *****ulent case on my credit card with Nedbank on the 3rd of Sempter 2024 since then no one has given me feedback regarding the case. I phone every now and then leaving messages but no one us coming back to me. I was told the person handling my case is Monica Maphosa on *** which is the number I'm calling always. To my surprise the case is still on but I received calls from Nedbank saying I should pay a certain amount of money which I won't manage. I explained to them saying that my account is still under investigation but they don't stop calling me. Can someone please advise on this matter.