Double charge for handset for over a year

I've had the same number with Vodacom for over 20 years but I've totally lost all confidence in this company.

Firstly, I've been double charged for a handset for over a year, that's R400+ every month, I've spoken to every person through every channel to sort this out and it never was, finally this month it looks the contract situation is sorted out but now on my latest invoice I have a once off charge labelled: Equipment - Balance of Contract March R5,263.20! *** Vodacom. That looks like the amount that vodacom owes me!! How the hell can one company mess things up so badly. Oh wait there's more. Then I get an sms saying I've been softlocked for reaching some Voluntary limit which I've never set, I go onto their vodacom portal and that service isn't even activated! Days after getting hold of their support my phone got unlocked except for my roaming data which I kinda need considering I'm in Germany at the moment! So I have a phone I can't really use and Vodacom is trying to triple charge me for the handset.

I have no choice but to block their debit order, have the service cut off and go to court.