Day light *******

It's almost been a month and still to date I keep getting messages and statements that I owe Mr Price . No I am in arrears?!? I am not going to pay any cent!! The last statement I owed R 12,40 then it was R342. And now I'm in arrears?!?!? I want my account closed!!!!!!!! Should it not be closed, it will not end nicely. I refuse to pay anything, I paid my outstanding amount for my balance last year December, the cashier that time did not inform me about hidden costs! It is unfair and Day light ******* for a consumer to always be paying and paying!!! Please fix this!