Charge for late payments after incorrect statement

I have never received a statement from Edgars since I opened my account. After many unsuccessful phone calls and emails to try and get my statement emailed to me I still had to login to the online website ( which is **** by the way).I phoned on the 19th Dec to try and get my account installment as the website showed my installment as R0. I kept on paying R300 every month to pay my account off, today I received a sms to say I need to pay my account to keep a good credit score.After I logged in to the website my account installment was over R700 and they added late charges to my account after I was not receiving any form of statement in months.I am going to settle my account and not buy from your stores again and I will recommend everyone who is trying to build a positive credit score not to use any Edcon group shop as they will ***** your good score.