Angry and frustrated with unprofessional job done

To FNB, I have reported *****ulent activity on my account and been to the police station to open a case on the 31 October 2925. I was given a lady by the name of Dineo who will be dealing with the investigation on this case, I even send her all statements of the money withdrawn from my investment account. Everytime I call her for the feedback she'll say case takes 7 to 31 days for investigations. To my surprise on the 26/11/25 I received a decline letter from FNB card froud claiming contactless card transactions, registered link device totaling to R17602.94 at the same time money withdrawn from my account was R100,000 from my investment. Obviously my devise is on my profile and link to every account I have with them. I need my money back I worked hard for it that FNB can throw just like that. Their reasoning is vake and unprofessional. I was told that I cannot get any money from investment account after 30 days of investment surprisingly that has happened.when money is withdrawn from my account I normally get notification by sms with this one nothing until I visited the bank with other business that's how I found out. This is an insight job. I need my money back.