Vodacom messes my life

Last year mid year i was a victim of identity theft and vodacom was adviced of this where contracts were taken out and upgrades were processed.I made countless attempts to contact them and the answer i always got was "We will investigate or Our ***** team is dealing with it" and then boom i recieve a call from collections because they decided to stop my existing debit order from running.I then told them to reinstate it and now because it was my instruction it was never done.If Vodocom had done what they needed to do they would not be calling me because my contract ended last year Octobr.Now more then a year later im getting calls from lawyers and when i contact Vodacom they say they do not have any information on the account......How i wish i never got myself involved with vodacom in the first place.What must happen now that they want money but they cant see info on my account.