Account blocked for being a victim of a ****

I had a Capitec bank account for more than 20 years and everything was good. 2 weeks back a friend invited me to join MDI, an online investment platform. I bought the products twice, using my Capitec account, but I never received my payout. I later discovered it was a **** when my bank account was blocked. When I went to the bank I was told that I had to bring proof of what the **** was about, how it worked and that I was being investigated for *****. I’m still unable to access my account to date, because I was the one who was ****med, I never ****med anyone and I never received any money from the ****, instead it’s my money that was taken.