CONFUSED WITH MY BILLING

LOL I AM CONFUSED I PAID 1241.00 AND I CHECKED MY ACCOUNT IT SAID THAT I STILL OWE R15RAND HOWS THIS POSSIBLE.THE TOTAL THAT I HAD TO PAY WAS Hi John, the amount due now is R625.71 and the R615.26 is due on the 28th of August. ^Anele IT MAKES 1240.97 .PLS FIX THIS OR TELL ME FOR WHAT THIS 15RAND IS FOR THANKS BEFORE THEY CUT MY NET THEN ITS RE ACTIVATION FEES AGAIN ETC ETC .