Vodacom Complaint

I am trapped in a cellphone contract with Vodacom that should have ended last year december but because I wasn't working and unable to finish paying on time,the contract dragged into 2019,I have since tried to end the contract when I eventually paid off my debt and that's when I spoke to a guy called Thabiso Thahane who offered me e very affordable deal since I use data a lot and it's expensive,so I was offered a deal where I would pay R108 a month and I told him I do not trust vodacom anymore since it always has hidden costs,Thabiso then said if that ever happens then I should call him..well I tried calling him this morning and after holding the line for 11minutes,I was told he's busy with a client and he'll call me back in 20 minutes,this was at 9:30 this morning and still he has not called!!on Friday afternoon last week I paid R 900 into my vodacom account after my phone had been blocked for a couple of weeks last month,I paid this amount hoping I can finally be rid of this contract.unfortunately it's still a losing battle