Overcharge of invoices

Telkom has loaded a recurring data and additional data on my contract lines without my consent.I complained about this through the Telkom call centre and numerous cases were logged and there was only one which was resolved during October 2015.My lines are suspended because i have not paid for November and December.My instalment is 840 now my invoice is sitting at 4600 for November and December and Jan.Each time i phone the call centre i receive different information and poor service.My first line one my contract ended on the 14th of January i do not want to upgrade I am scared that Telkom will still continue to bill me for this.On the 26th of January 2016 i went to Telkom Irene Village and spoke to a gentlemen there he could'nt even try to assist me.I then spoke to a lady by the name of Trinity i explained to her my problem.She sent an email to the person that was looking after my case that was open since 2015.She then said she would call but she did'nt.I had to drive back to Irene to find out if it was resolved but it was not.The person in charge Chanelle Swartz didnt even call me.This is urgent my lines are suspended because of the enormous overcharge on my account.