Ombudsman my next step!

In June I made an online payment to Mogale City using the banking details that was on the mobile app. I realised more than 30 days later that the payment does not reflect on our rates & Taxes statement and went into the bank to reverse the payment. I was told that because it is more than 30 days, it might not be reversed, and we realised that the bank account number on the app was wrong. I still have not received any feedback on this and I will take this up with the Ombudsman. I feel that it was not my error as the bank account number on the app was wrong and we as users depend on the app that the details is correct. The amount that I paid was R2000 and I would like it to be reversed so I can make this payment by hand to ensure it is allocated correctly. I love the bank, but this needs to be dealt with accordingly. I would appreciate some assistance is this regard.