Ackermans is a Reap off

Good day,hope all is well.I have issues with my Ackermans account,which I have opened sometime in 2020 if I'm not mistaken, I have never experienced any issues with my account until recently where I discovered I'm being billed 3 times on my account.The first billing is the monthly installment,plus interest fee,plus card fee, according to my knowledge is that your monthly installments should include the interest fee plus the card fee one is being charged,but also my query is why get charged hideous interest fees. I started keeping record of every instalment I'm paying,which then didn't make sense,as I have bought stuff for R199.99,then was charged an interest fee of R150 by Ackermans. I wrote an email stating my case,it was never responded to.I had made several calls through their customer service,which has rude and *********** customer service reps. I would like to have my case attended to and be explained why am I be billing 3 times on my account.