WRONG BILLING

ALTECH SENT ME A BILL FOR R3799.68 FOR MY CONTRACT THAT I HAVE WITH THEM FOR 2GB FOR R120 A MONTH. I AM UPSET BECAUSE:1. WHEN THE CONTRACT GOT MIGRATED TO ALTECH, I WAS NEVER NOTIFIED THAT ITS AN OPEN LINE CONTRACT WHICH CANNOT BE CAPPED .2. I DID NOT AGREE IN SIGNING OR VERBALLY WITH ALTECH THAT THIS IS GOING TO BE AN OPEN CONTRACT, AND I WILL BE LIABLE IF IT INCURS EXTRA CHARGES. 3.LAST YEAR WHEN THE CONTRACT WAS MIGRATED TO ALTECH, THERE WAS A TIME AROUND NOVEMBER WHEN THE 2GB GOT FINISHED AND THE LINE WAS CUT OFF. I CALLED IN AND I WAS NOTIFIED THAT I CAN INCREASE THE LIMIT BY A CERTAIN AMOUNT AND I WILL GET BILLED ON THE OUT OF BUNDLE RATE TILL THE AMOUNT THAT I CHOOSE GETS FINISHED, NOTHING WAS SAID THAT IT WILL OR MIGHT EXCEED.3. I REQUESTED FOR R80, AND THAT WAS THE AGREEMENT THAT I HAD WITH ALTECH. I WAS SENT AN SMS NOTIFICATION & AN E-MAIL TO CONFIRM THAT ARRANGEMENT. 4. I WAS ADVISED THAT EACH TIME WHEN I REACH THAT LIMIT, I WILL BE NOTIFIED VIA MY E-MAIL ADDRESS. I HAVE A PROOF OF E-MAILS THAT WERE SENT TO ME BY ALTECH TO CONFIRM THIS OR AS PROOF TO THIS.<br> 5. THIS TIME AROUND, I WAS NEVER SENT ANY NOTIFICATION AT ALL WHEN I GOT TO THAT LIMIT,& THE LINE WAS NOT CUT OFF.