Account been blocked for a year

Last year August Capitec decided to block my account saying it had ********** deposits which I was surprised to hear. They said they will not open my account because it is under investigation. What I need to know now is does it take Capitec the whole year to investigate? And why do they just block accounts with calling the client to let them know what is happening? Every time I call the call center they tell me I need to call their ***** dept. I mean for what? Why doesn't Capitec do that since they decided to block my account because of things I know nothing about. I have never received feedback from Capitec to tell me what the outcome is.