BLOCKED ACCOUNT

I am so disappointed at CAPITEC BÀNK because they have blocked my account without any prior communication. I visited one their branches regarding this problem so they advised me to send an affidavit and my Cerfitified ID copy which I submitted on the 10th of June at CAPITEC KAGISO MALL, they told me that the problem will be solved after 21 days but up until now I am still waiting. This issue is really inconveniening me because I am still a student and I receive my grant money via CAPITEC but now I can't withdraw my money . I demand CAPITEC to unblock my account so that I can withdraw all my money.