Discovery Bank locked my account

I opened an transactional account with Discovery Bank on the 10th of November. Account was opened, card received and activated and I started transacting. Today, the 23rd of November, I noticed my account and card was blocked. I spoke to Able who blocked my account stating that in 2017 apparently there was a ********** activity listing with African Bank, and hence Discovery Bank is declining my application for an account. Now Discovery bank does not want unblock my account so that I can transfer my money currently in the account to another account with another bank untill this is resloved and cleared. This can take weeks or even months... Discover bank, why were these checks not done before hand and now that my account is locked I cannot transfer my money out of your bank? this is theft! STAY AWAY FROM DISCOVERY BANK...