Standard bank policy is punishment for a naughty customer

I have arranged with Standard bank to pay the interest for 6 months only on my home loan account !! Because the tenants stopped payment.

I have paper proof of the arrangement.

Standard bank never increased the debit order, when they wanted more money!! This placed my account in bad standing.

I rectified it.

3 weeks after I rectified the Standard bank home loan account, standard bank still went ahead and closed the U account, I've lost R500 on the account. It's ********* of standard bank. They refuse to take any responsibility for their faults or to re open my U-account. They didn't even warn me, because again due to their incompetence captured my contact information incorrectly. They treat customers like kids and want to punish a customer. What should their punishment be for In competence? I guess that's why their branches are closing down. Can't keep up with competition and continue with poor customer services. 3weeks after the account is rectified, they still want to punish you. How is that working for you Standard bank?