Banking App and Online Banking Broken

The Old Mutual Money Account online banking system and its mobile banking app will ***** your life indeed. Recently, I made a payment of 8000 ZAR to a Standard Bank account and the account number of the recipient started with a zero digit. Having not noticed this bug on their online banking systems, if you enter a bank account number that starts with a zero it will swallow it. I really do not understand who in their brilliant mind would use an integer instead of a string data type to store a bank account number in the database, it really still beats me. IT really shows that the people who developed these banking systems did not apply any industry standards and best practices in industrial software engineering. And the worst part is - Old Mutual has this clause that "they will not be responsible for any errors that may occur with entering a WRONG bank account number" when their very own system intentionally does not store a CORRECT bank account to begin with. I really regret opening a bank account with Old Mutual.