**** service provider!!

So I receive an email from Vodacom (draft summon), where I’m being threaten to be handed over to debt collection agency if I don’t pay what I owe them. The letter says I have an outstanding subscription balance, what the hell is that??? I finished my contract and paid every single cent that was required on my contract, so what is balance of subscription when my number was converted to prepaid long again and there was no balance due from me, as a matter of fact I paid Vodacom at extra R7,20 on the last month of my contract sometime in April, now they in November they coming to claim that I owe. And as usual, their customer care is HORRIBLE!! When I called, the lady can’t explain and wants to transfer me to someone, when she eventually does transfer me, the person answers and drops, really, I must call again and explain the story to another person who will transfer me to another person again, only for them to drop the call!!! I need to actually port this number to another provider cause I’m gatvol with Vodacom!!