Charged with Double Interest!

So i am almost done paying my account, I am paying R1745 pm. When i looked at my statement now i see i get charged with double interest. 1st interest is R43 and 2nd interest is R123 so they are just taking money like it's nothing.

I am not happy with this, I will however be closing my Account with them after this.

Double interest, can't believe this. The last time i had this problem was with Edgars and they ended up paying half of the account.

TFG needs to really wake up!