Weak systems

Hello, I took out a credit card in January 2023 from African Bank. There was a suspected case of ***** that took place on my credit card and the card was placed on hold. The ********** created an online profile and transferred the money to a myworld account. Its been almost four weeks now without getting anything concrete regarding the matter and worst of all I've just discovered that I am required to pay R1400 installment for money that exists in the bank as a security measure. Please kindly assist