Vodacom breaches their own contracts

Beware of signing any contracts with Vodacom especially capped data contracts. I have been in a battle with them since September 2016 where they started deducting random high amounts from my bank account after 18 months into my 24 month contract. Even after I cancelled the contract on numerous occasions they still continued deducting from my account. I still have a pending claim against them, been from pillar to post, repetitive emails and hours of phone calls wasted at my expense, however they handed me over to debt collectors now incorrectly stating that I owe them funds. Unbelievable. And they simply refuse to pay attention to the detail of events provided by me. I have also been asking for a copy of my original contract which they also can't provide. Been a very frustrating journey with them and still not resolved.