Accounts department Horror

They dont event deserve a star,Accounts office called me say I didn't pay for over three weeks now am in arrears for over R2000. I sent them my bank statement the lady said she's too busy to check my bank statement. I went to their office to check what's going on only to find out they took payment twice in the same week.than they wanted to take other payment in the following week meaning every week I have to be billes twice in one week. I asked why they sent me like that ? The lady just said I'll fix it when I get time. People warned me about them ,they are horrible to say the list, this company should be closed permanently.