Discovery Bank, different month, same failure!

Please see my previous complaint posted 2 months ago, copy and paste, when you charged me interest on my account despite my payment option being debit order in full. This error of 2 months ago was rectified, but it seems like your business is too *********** to actually get to the root cause to prevent it from happening again! Maybe you just like fixing the same problems over and over again! So my July statement has exactly the same issue! Interest charged in June and July. Please reverse these incorrect charges and fix your useless system to once and for all stop it from happening again!