One late payment and a lillte less to recovery!!!!

Woolworths roams to be this huge family store, which they are, but when it comes to the payments department all falls flat.<br> <br> My account has never been late or in arrear. Last month only I paid on the 4th and not the first, which is not wrong as according to NCA you have till the 7th of a month to pay. I paid R500 less than what I should have due to medical bills i incurred. Not even two weeks later I get an sms R500 due, another sms later R1450 due this is now total payment plus the outstanding, which I know and will pay end if month!! Next thing message on phone just call this number not stating where they from or whats it about, thats POOR, i called this is a freaking collection agency for the account, what the HELL? Telling me this will be on itc,what the hell? One late payment you got to be kidding, this is not TCF or treating client fair, ive been a customer for a long time, please rather catch the real ********* ans not loyal people. I want confirmation that itc will be corrected, I did make a payment NCA states if you make a payment it should be accepted. They cant itc after one late payment, im furious being treated like a ******** your ruining my record on 1 late payment!!