I have a old data co...

I have a old data contract with vodacom that i only use for the vodacom email..so everymonth i pay with eft..R49...now i get n statement saying i owe over R150...How the hell do u get to that vodacom..i am tell u now my last acc messup that u created in the same way...i was stupid enough to pay..but i am telling u now..i am done with your pathetic service..i wil only pay what my acc contract says..not a cent more..if u want to take me to court..go for it....i will not entetain any more of your non excisting service