Locked Account

My Account was locked on the 20th of December. I was at the Caltex putting fuel in my car, when I wanted to pay for the fuel the transaction was declined ( Card Declined ). When I logged into the banking app it advised that my account and cards have been blocked without letting me know why. To make a story short it is now the 9th of February and my account is still locked and numerous calls and in branch visits have been unrestful. Every time there is a different reason for why the account is locked and requests for documentation which I have provided but then I am told its a App problem. I got to the stage where I closed the account in January and they were going to transfer my available balance in the account to another account of mine. A month later and still no funds and every conversation and branch visit is unsuccessful. This is unprofessional as my Family is struggling because of this, rent that needed to be paid could not be paid so I had to get a loan to pay the rent and every month now I need to stress about where I am going to get the funds to pay my rent as my funds I had is not accusable to me. This needs to be resolved.