DISGUSTED BY VODACOM SERVICE

i had a contract with them and they are constantly billing me for data that i didnt use, they billed me last september for the amount of R1553.88 sayin i was on the internet and when asked which sites i was on they cudnt advise which sites i was using, the data department told me to take my phone to a repair shop n they will tell which sites i was on. they called me about a month ago saying that my number is off the network as i refused to pay as they billing me and said my query was busy being investigated and they will get back to me, they said they can reduce the bill to about R800 and then again to R500 and i said no as i didnt use the internet and dnt see y i must pay for sumfin i didnt use. they reduced it to R300 and i said im not paying they must reduce it completely as im not paying for something i didnt use, up until today they still didnt get back to me and nw they sending me sms they handing my account over to lawyers, that is pathetic service from vodacom and want my account to be sorted out as im nt paying for services i didnt use and if my nubmer is off the network y must i pay and i dnt get any services from vodacom. you disgust me and i want my account to be sortd